The document provides information about a crash course for IIT-JEE, BITS, UPTU and AIPMT exams, including details about the course structure, faculty, study material, practice problems, and test series. It mentions that the course provides over 240 hours of training by experienced faculty, concise chapter-wise theory, 3000 practice problems, expert time management tips, and 10 full-length tests on the IIT-Main exam pattern. It also provides information about course features, registration fees and dates.

1. Stable & Best Faculty
Best System
Proven Result
Ultimate Care
Near Jaipuriya Mall
CRASH COURSE for IIT-JEE,BITS,UPTU& AIPMT
Tips + Tricks + Time management
Training of more than 240 hrs. by highly experienced and best in class faculty.
Study material having concise chapterwise theory for clarity on key concepts & formulae.
Specialized Practice Booklets containing 3000 problems, forms the Course.
Expert's tips on time management and strategic planning will help students to focus and plan well.
10 full length tests on IIT‐Main pattern along with detail discussion.
Course Features
discount on
registration
till 10th March
30%
MOCK TEST PAPER
PHYSICS
(class12th)
Registration Fee : 2000/-
Registration Open :
Batch Commencement Data : 15th, 22nd & 29th March
Boost your IIT-JEE / AIPMT Preparation

2. Guess Paper
Class – XII
Subject – PHYSICS
Marks:70 Time: 3 Hours
(Candidates are allowed additional 15 minutes for only reading the paper.
They must NOT start writing during this time)
----------------------------------------------------
Answer all questions in Part I and six questions from Part II, choosing two questions
from each of the Sections A, B and C.
All working, including rough work, should be done on the same sheet as, and adjacent to,
the rest of the answer.
The intended marks for questions or parts of questions are given in brackets [ ].
(Material to be supplied: Log tables including Trigonometric functions)
A list of useful physical constants is given at the end of this paper.
Part – I
(Compulsory)
Question – 1
A. Choose the correct alternative (a),(b), (c) or (d) for each of the questions given below: [5]
(i) A dipole placed in a uniform electric field experiences
(a) only a net force (b) only a torque
(c) both a net force and a torque (d) neither a fore nor a torque
(ii) The force on a charged particle moving in a magnetic field is maximum when the angle
between direction of motion and field is
(a) zero (b) 45o
(c) 90o
(d) 180o
(iii) An important component of Michelson’s method to determine speed of light is:
(a) A Nicol prosm (b) A bi prism (c) a grating (d) an octagonal mirror
(iv) In a sample of radioactive material what percentage of material will decay in one half life ?
(a) 50% (b) 37% (c) 69.3% (d) 63%
(v) The kinetic energy of a photon depend upon……….of radiation
(a) intensity (b) frequency (c) velocity (d) direction
B. Answer all questions briefly and to the point: [15]
(i) State Coulomb’s law in electrostatics.
(ii) Which conservation principle is involved in Kirchoff’s second law?
(iii) What is specific resistance?
(iv) What is the internationally accepeted value of velocity of light in vacuum? (All nine digits).

3. (v) Alternating current I flowing through a device lags behind the potential difference V
across it by 90°or π/2 radian. Is this electrical device a resistor, an inductor or a
capacitor?
(vi) What kind of source produces a cylindrical wave front?
(vii) On which factors does the deviation produced by a thin prism depend?
(viii) A convex lens forms a virtual image of an object. Where is the object? Answer in terms of
focal length.
(ix) In which state, a substance emits a line spectrum?
(x) Write down the relation between mean life τ of a radioactive substance and its half
life T½.
(xi) What is rectification?
(xii) What is an analogue circuit? Give examples.
(xiii) According to the modern view, matter and energy are inter-convertible. Give one
example where energy is converted to matter.
(xiv) Write down the truth table of an AND gate.
(xv) What is meant by doping?
Part – II
Answer six questions in this part, choosing two question from each of the section A, B and C.
SECTION - A
(Answer any two questions)
Question – 2
a) What is an electric dipole? Obtain an expression for electric field at a point along the equatorial line of
an electric dipole. [4]
b) Using Gauss’ Theorem, calculate intensity of electric field at a point at a radial distance of
3 cm from an infinite line charge having linear charge density of 5×10-6
C m-1
[2]
c) Explain the phenomenon of induction for the electrification of a conductor [3]
Question – 3
a) Draw a labeled diagram of a balanced wheat stone bridge. Using either Ohm’s law or Kirchhoff’s
law obtain the relation between four resistors forming the bridge. [3]
b) Figure (a) below shows a potentiometer circuit. when the jockey is pressed on the slide wire AB at a
point C such that AC=2.9 m the galvanometer ‘G’ shows no deflection. Find the emf of the cell X.
[3]

4. fig. a
c) Obtain an expression for the drift velocity in terms of relaxation time and discuss the consequences
based on the value of relaxation time. [3]
Question – 4
a) Using Ampere’s Circuital Law and with the help of a labelled diagram, show that magnetic flux density
‘B’ at a distance r from a long straight conductor is given by : B = μoI/2 r, where the terms have their
usual meaning. [3]
b) Define ‘time constant’ of an LR circuit. What is its MKS unit? [2]
c) Explain an alternating current circuit with capacitor alone. [3]
Section – B
(Answer any two questions)
Question – 5
a) How are the electric vector E and magnetic vector B and velocity vector C oriented in an
electromagnetic wave? [2]
b) The distance between the first and sixth bright fringes formed in Young’s double slit experiment is
found to be 12.5 mm. The separation between the slit is 0.12 mm and the distance of the screen from
the slits is 60 cm. Calculate (i) the fringe width, (ii) the wavelength of light used (in mm) [3]
c) What is a Polaroid? What is meant by (i) plane polarizing light and (ii) polarizing angle? [3]
Question – 6
a) Derive Lens Maker’s Formula. [4]
b) A glass lens is immersed in water. Will its power increase or decrease? [1]
c) When two thin lengths f1 and f2 are kept in contact, prove that their combined focal length f is
given by 1/f= 1/f1+1/f2. [3]

5. Question – 7
a) Explain the phenomenon of total internal reflection with neat ray diagrams. [3]
b) Derive the condition for two thin lenses placed coaxially in contact so as to form an achromatic
combination. Why are lenses of opposite nature used to form an achromatic lens combination? [3]
c) An astronomical telescope is adjusted to form the final image at infinity. The separation between
the lenses is 80 cm. The angular magnification is 15. Calculate the focal lengths of the objective
lens and eyepiece. [2]
Section – C
(Answer any two questions)
Question – 8
a) In a cathode ray-tube, an electron passes through a field, where electric field E and the magnetic field B
are uniform and mutually perpendicular. Derive an expression for velocity at which the electron
reaches the screen undeflected. [3]
b) Calculate the energy and momentum of a photon of wavelength 10000 Ao
. [2]
c) State the laws of photoelectric emission. [3]
Question – 9
a) The activity of a radioactive material drops to 1/16th
of its initial value in 24 hours. Calculate its half life
and decay constant. [3]
b) The wavelength of a yellow line of sodium is 5896 Ao
. Give its wave number. [2]
c) What is meant by hard and soft X-rays? How can the intensity and penetrating power of X- rays be
controlled? [3]
Question – 10
a) What is meant by average life of a radioactive substance? [2]
b) Draw a labelled circuit diagram of a simple common-emitter amplifier, what is the phase
angle between input and output voltages? [3]
c) Explain energy generation in stars. [3]
USEFUL CONSTANTS
1. Speed of light in vacuum : c = 3 × 10
8
ms
-1
2. Planck’s constant : h = 6.6 × 10
-34
Js
3. Constant of proportionality for Coulomb’s Law : 1/4πεο = 9 × 10
9
mF
-1
4. Bohr radius : aο = 5.3 × 10
-11
m
5. Charge of a proton : e = 1.6 × 10
-19
C
6. Constant of proportionality for Biot Savart Law : μο /4π = 10
-7
Hm
-1

6. Prakhar Goel
Student of APEX
One year classroom Program.
He is studying MBBS in Maulana
Azad Medical college Delhi.
Siddhant Rathore
CBSE : 91.6%
Student of APEX
ree year classroom Program.
He is studying Mechanical
Engineering in BITS Goa.
Dhwani Jain
Student of APEX
ree year classroom Program.
She is studying Chemical
Engineering in NUS Singapore.
Selected in NUS
National University of Singapore: 1st Rank in Asia
AIPMT AIR 427(GE)
Prerna Kashyap
CBSE : 96%
Student of APEX
Two year classroom Program.
She is studying in NIT Kurukshetra.
IIT-Main AIR 521(GE)
Apeksha Garg
CBSE : 96%
Student of APEX
One year classroom Program.
Vibhav Singh
CBSE : 96%
Student of APEX
One year classroom Program.
M-95, C-98, P-95 B-98, C-97, P-95
School : Cambridge Indirapuram
School : Amity Noida
Student of APEX
Four year classroom Program.
She is studying in Delhi Technical
Univercity(DTU) .
IIT-Main Score: 186
School : DPS Noida
School : Ryan Noida
STAR PERFORMERS OF THE YEAR
Arindham Roy
CBSE : 95%
Student of APEX
Two year classroom Program.
He is studying in NIT Patna.
IIT-Main Score : 158
School : Cambridge Indirapuram
BITS SCORE: 329
Sharvi Tomar
CBSE : 95.4%
Shubham Mukharjee
Student of APEX
One year classroom Program.
He is studying in IIT Guahati.
IIT(Adv.)AIR 1823(GE)
Shaurya Tomar
CBSE : 93.2%
Student of APEX
Four year classroom Program.
He is studying in Thapar
Institute Patiyala.
IIT-Main Score : 149
School : DPS Noida
Rishab Gupta
CBSE : 92.8%
Student of APEX
Four year classroom Program.
He is studying in Government
Engineering College Bilaspur.
IIT-Main Score :158
School : KV Noida
CBSE TOPPERS
68% Selections in IIT-Main
Selections in IIT-Advanced56%
60%Selections in AIPMT
Shreya
CBSE : 94%
Student of APEX
Twor year classroom Program.
Sharvi Tomar
CBSE : 95.4%
Student of APEX
Four year classroom Program.
M-95, C-96, P-95 M-95, C-95, P-91
School : DPS Noida School : Modern school Noida
Shaurya Tomar
CBSE : 93.2%
Student of APEX
Four year classroom Program.
M-95, C-97, P-92
School : DPS Noida
Pranjal Singh
CBSE : 90.4%
Student of APEX
Two year classroom Program.
Areesha
CBSE : 91%
School : Genesis global school
Deepti
CBSE : 88%
Aarushi
CBSE : 88%
School : St. Teresa Indirapuram School : Ralli Int. schoolSchool : St. Francis Indirapuram
Student of APEX
One year classroom Program.
Student of APEX
Four year classroom Program.
Student of APEX
Two year classroom Program.
Apex topper scored
96%
marks in Board Exam.
100%
students got more
than 85% marks in
Board Exam.
.......and many more
Unmatched results in IITJEE & Medical consistently
Near Jaipuriya Mall
Call for Free Demo classes @ 9990495952
NTSE Qualify
YASH SHARMA
SCHOOL: DPS Indirapuram