This document contains a past physics exam from 1998 with 40 multiple choice questions covering topics like transistors, optics, mechanics, electromagnetism, and thermodynamics. The questions are presented without answers in a format intended to test understanding of fundamental physics concepts through application to quantitative problems.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
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Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
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Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
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This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
2. SECTION – I MORE THAN ANSWER TYPE Read questions 1 to 40 below carefully answer choose the correct lettered choice(s)from among the alternatives given below for each question. A question may have one or more correct alternatives. In order to secure any marks for a given question, all correct lettered alternative(s),and no incorrect ones, must be chosen.
3. 01 Problem A transistor is used in the common emitter mode as an amplifier. Then the base-emitter junction is forward-biased. the base-emitter junction is reverse-biased. the input signal is connected in series with the voltage applied to bias the base-emitter junction. the input signal is connected in series with the voltage applied to bias the base-collector junction.
4. Problem 02 Water from a tap emerges vertically downwards with an initial speed of .The cross-sectional area of the tap is .Assume that the pressure is constant throughout the stream of water, and that the flow is steady. The cross –sectional area of the stream 0.15 m below that tap is a. b. c. d.
5. Problem 03 A real image of distant object is formed by a plano-convex lens on its principal axis. Spherical aberration is absent is smaller if the curved surface of the lens faces the object. is smaller if the plane surface of the lens faces the object. is same whichever side of the lens faces the object.
6. Problem 04 Let respectively denote the mean speed, root mean square speed, and most probable speed of the molecules in an ideal monatomic gas at absolute temperature T. The mass of molecule is m. Then no molecule can have a speed greater than no molecule can have a speed less than the average kinetic energy of molecule is
7. Problem 05 A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300K.The ratio of the average rotational kinetic energy per molecule to that per molecule is 1 : 1 1 : 2 2 : 1 depends on the moments of inertia of the two molecules.
8. Problem 06 A string of length 0.4 m and mass is tightly clamped at its ends. The tension in the string is 1.6 N. Identical wave pulses are produced at one end at equal intervals of time, t .The minimum value of which allows constructive interference between successive pulses is 0.05 s 0.10 s 0.20 s 0.40 s
9. Problem 07 Two particles, each of mass m and charge q, are attached to the two ends of a light rigid of length 2R.The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is a. b. c. d.
10. Problem 08 A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence of .The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible value(s) of n from the following: 1.3 1.4 1.5 1.6
11. Problem 09 Let be the mass of a proton, the mass of neutron, the mass of a nucleus and the mass of a nucleus. Then a. b. c. d.
12. Problem 10 A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam. At the first minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of the slit is 0
13. Problem 11 The electron in a hydrogen atom makes a transition where and are the principal quantum numbers of the two states. Assume the Bohr model to be valid. The time period of the electron in the initial state is eight times that in the final state. The possible values of are a. b. c. d.
14. Problem 12 A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position, and has a speed u. The magnitude of the change in its velocity as it reaches a position where the string is horizontal is a. b. c. d.
15. Problem 13 In the circuit shown in Fig.1998.1 the current through the resistor is 0.50 A the resistor is 0.25 A the resistor is 0.50 A the resistor is 0.25 A
16. Problem 14 A dielectric slab of thickness d is inserted in a parallel plate capacitor whose negative plate is at and positive plate is at x=3d.The slab is equitant from the plates. The capacitor is given some charge. As x goes for 0 to 3d , the magnitude of the electric field remains the same the direction of the electric field remains the same the electric potential increases continuously. the electric potential increases at first, then decreases and again increases.
17. Problem 15 The co-ordinates of the corners of a square plate are (0,)),(L,0),(L,L) and(0,L).The edges of the plate are clamped and transverse standing waves are set up in it at some instant of time, the possible expression(s) for u is (are) (a=positive constant) a. b. c. d.
18. Problem 16 A force (where k is a positive constant) acts on a particle moving in the plane .Staring from the origin, the particle is taken along the positive axis to the point (a,0),and then parallel to the y axis to the point (a,a).The total work done by the force F on the particle is a. b. c. d.
19. Problem 17 A small square loop of wire of side is placed inside a large square loop of wire of side .The loops are co-planar and their centresconicde. The mutual inductance of the system is proportional to a. b. c. d.
20. Problem 18 The half-life of is 8 days. Given a sample of at time t=0,we can assert that no nucleus will decay before t=4 days no nucleus will decay before t=8 days all nuclei will decay before=t=16 days a given nucleus may decay at any time after t=0
21. Problem 19 Two identical containers A and B with frictionless pistons contain the same ideal gas at the same temperature and the same volume V. The mass of a the gas in A is , and that in B is .The gas in each cylinder is now allowed to expand isothermally to the same final volume 2V.The changes in the pressure in A and B are found to be and 1.5 respectively. Then a. b. c. d.
22. Problem 20 A given quantity of an ideal gas is at pressure P and absolute temperature Tithe isothermal bulk modulus of the gas is a. b. c. d.
23. Problem 21 A charge +q is fixed at each of the points ad inf. on the axis ,and a charge –q is fixed at each of the points …ad inf. Here is a positive constant. Take the electric potential at a point due to a charge at a distance from it to be . Then ,the potential at the origin due to the above system of charges is 0
24. Problem 22 Let I be the moment of inertia of a uniform square plate about an axis AB that passes through its centre and is parallel to two of its sides.CD is line in the plane of the plate that passes through the centre of the plate and makes an angle with AB. The moment of inertia of the plate about the axis CD is then equal to a. b. c. d.
25. Problem 23 Two cylinders A and B fitted with pistons contain amounts of an ideal diatomic gas at 300K.The position of A is free to move, while that B is held fixed. The same amount of heat is given to the gas in each cylinder. If the rise in temperature of the gas in A is 30K,then the rise in temperature of the gas in B is 30 K 18 K 50 K 42 K
26. Problem 24 A concave mirror is placed on a horizontal table, with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be real and will remain at C. real, and located at a point between C and , virtual, and located at a point between C and O real, and located at a point between C and O.
27. Problem 25 A metal rod moves at a constant velocity in a direction perpendicular to its length. A constant, unifrom magnetic field exists in space in a direction perpendicular to the rod as well as its velocity. Select the correct statement (s) from the following : The entire rod is the same electric potential. There is an electric field in the rod The electric potential is highest at the centre of the rod and decreases towards its ends. The electric potential is lowest at the centre of the rod,and increases towards its ends.
28. Problem 26 A positively charged thin metal ring of radius R is fixed in the plane with its centre at the origin O.A negatively charged particle P is releases from rest at the point .Then the motion of P is periodic ,for all values of satisfying simple harmonic, for all values of satisfying approximately simple harmonic, provided such that P cross O and continues to move along the negative z axis towards
29. Problem 27 A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth. The acceleration of S is always directed towards the centre of the earth. The angular momentum of S about the centre of the earth changes in direction, but its magnitude remains constant. The total mechanical energy of S varies periodically with time. The linear momentum of S remains constant in magnitude.
30. Problem 28 The torque on a body about a given point is found to be equal to where A is a constant vector, and L is the angular momentum of the body about that point .From this it follows that is perpendicular to at all instants of time. the component of in the direction of A does not change with time. the magnitude of does not change with time. L does not changes with time.
31. Problem 29 During the melting of a slab of ice at 273 K at atmospheric pressure, positive work is done by the ice-water system on the atmosphere. positive work is done by the ice-water system by the atmosphere. the internal energy of the ice-water system decreases. the internal energy of the ice-water system decreases.
32. Problem 30 In a p-n junction diode not connected to any circuit, the potential is the same everywhere the p-type side is at a higher potential than the n-type side . there is an electric field at the junction directed from the n-type side to the p-type side there is an electric field at the junction directed from the p-type side to the n-type side.
33. Problem 31 A spherical surface of rasius of curvature R separates air (refractive index 1.0)from glass (refractive index 1.5).The centre of curvature is in the glass. A point object p placed in air is found to have a real image Q in the glass. The line PQ cuts the surface at a point O, and PO+OQ. The distance PO is equal to 5R 3R 2R 1.5R
34. Problem 32 A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r from its centre increases as increases, for r<R decreases as increases, for 0 < r < R decreases as increases, for R < r < is discontinuous at r = R
35. Problem 33 A transverse sinusoidal wave of amplitude a, wavelength and frequency is travelling on a stretched string. The maximum speed of any point on the string is where is the speed of propagation of the wave. If are given by a. b. c. d.
36. Problem 34 A blackbody is at a temperature of 2880 K. The energy of radiation emited by this object with wavelength between 499 nm and 500 nm is .The Wien constant .Then a. b. c. d.
37. Problem 35 Let denote the dimensional formula of the permittivity of the vacuum, and that of the permeability of the vacuum. If M=missal=length, T=time and I=electric correct, a. b. c. d.
38. Problem 36 The SI unit of inductance, the henry, can be written as Weber/ampere volt-second/ampere joule/ ohm-second
39. Problem 37 Two very long, straight, parallel wires carry steady currents respectively. The distance between the wires is d. At a certain instant of time, a point charge q is a point equidistant from the two wires, in the plane of the wires. Its instantaneous velocity is perpendicular to this plane. The magnitude of the force due to the magnetic field acting on the charge at this instant is 0
40. Problem 38 X-rays are produced in an X-ray tube operating at a given accelerating voltage. The wavelength of the continuous X-rays has values from a. b. c. d.
41. Problem 39 A particle of mass m is executing oscillations about the origin on the axis. Its potential energy is where k is a positive constant. If the amplitude of oscillation is a, then its time period is proportional to independent of a proportional to proportional to
42. Problem 40 The work function of a substance is 4.0eV.The longest wavelength of light that can cause photoelectron emission from this substance is approximately 540 nm 400nm 310 nm 220 nm
