NEET RANCHI

बुद्धा साइन्स एंड टेक्निकल इंस्टीट्यूट
Buddha Science & Technical Institute
Kokar, Ranchi, Jharkhand
JOIN BSTI FOR : IIT-JEE / NEET With BHARAT SIR
PHYSICS : IMPORTANT QUESTION FOR IIT-JEE / NEET
Q. Weight of a body of mass m decreases by 1% when it is raised to
height h above the Earth`s surface. If the body is taken to a depth
h in a mine, change in its weight is
A. 0.5% decreases B. 2% decreases
C. 0.5% increases D. 2% increases
ANS : A
V.V.I.
QUESTION

Q. The time period of an Earth satellite in circular orbit is
independent of
A. The mass of the satellite
B. Radius of its orbit
C. Both the mass and radius of the orbit
D. Neither the mass of the satellite nor the radius of its orbit
ANS : A
V.V.I.
QUESTION

Q. For a satellite moving in an orbit around the Earth, the ratio of
kinetic energy to potential energy is
A. 1 / 2
B. 1 / √2
C. 2
D. √2
ANS : A
V.V.I.
QUESTION

Q. A satellite moving round the Earth in a circular orbit of radius r
and speed v suddenly loses some of its energy. Then
A. r will increase and v will decrease
B. Both r and v will increase
C. Both r and v will decrease
D. r will decrease and v will increase
ANS : D
V.V.I.
QUESTION

Q. The potential energy of 4-particles each of mass 1 kg placed at the
four vertices of a square of side length 1 m is
A. +4.0 G
B. -7.5 G
C. -5.4 G
D. + 6.3 G
ANS : C
V.V.I.
QUESTION

Q. The kinetic energy of a satellite of mass m in its orbit of radius r
around a planet of mass M is given by
A. GMm / 2r
B. GMm / r
C. -GMm / 2r
D. None of the above
ANS : A
V.V.I.
QUESTION

Q. Pick out the most correct statement with reference to Earth
satellites.
A. Geostationary satellites are used for remote sensing
B. Polar satellites are used for telecommunications
C. INSAT group of satellites belong to geostationary satellites
D. Polar satellites are at a height of about 36,000 km
ANS : C
V.V.I.
QUESTION

Q. The total energy of a circularly orbiting satellite is
A. Twice the kinetic energy of the satellite
B. Half the kinetic energy of the satellite
C. Twice the potential energy of the satellite
D. Half the potential energy of the satellite
ANS : D
V.V.I.
QUESTION

Q. A satellite is launched into a circular orbit of radius R around the
Earth. A second satellite is launched into an orbit of radius 4R. The
ratio of their respective periods is
A. 4 : 1 B. 1 : 8
C. 8 : 1 D. 1 : 4
ANS : B
V.V.I.
QUESTION

Q. The height at which the weight of a body becomes 1 / 16th its weight
on the surface of Earth (radius R), is
A. 4 R
B. 5 R
C. 15 R
D. 3 R
ANS : D
V.V.I.
QUESTION

Q. An astronaut experiences weightlessness in a space satellite. It is
because
A. The gravitational force is small at that location in space
B. The gravitational force is large at that location in space
C. The astronaut experiences no gravity
D. The gravitational force is infinitely large at that location in space
ANS : C
V.V.I.
QUESTION

Q. In planetary motion, the angular momentum conservation leads to
the law of
A. Orbits
B. Areas
C. Periods
D. Conservation of kinetic energy
ANS : B
V.V.I.
QUESTION

Q. A body of mass M is divided into two parts m and M – m. The
gravitational force between them is maximum, if m / M is
A. 1 : 1
B. 1 : 2
C. 1 : 3
D. 1 : 4
ANS : B
V.V.I.
QUESTION

Q. The total energy and kinetic energy of an Earth`s satellite are
respectively
A. Positive and negative
B. Negative and positive
C. Positive and positive
D. Negative and negative
ANS : B
V.V.I.
QUESTION

Q. A planet moves around the Sun in an elliptical orbit with the Sun
at one of its foci. The physical quantity associated with the motion
of the planet that remains constant with time is
A. Velocity B. Centripetal force
C. Linear momentum D. Angular momentum
ANS : D
V.V.I.
QUESTION

Q. The total energy of an artificial satellite of mass m revolving in a
circular orbit around the Earth with a speed v is
A. 1 / 2 mv2
B. 1 / 4 mv2
C. -1 / 2 mv2
D. -1 / 4 mv2
ANS : C
V.V.I.
QUESTION

Q. The time period of an Earth`s satellite revolving at a height of
35800 km is
A. 24 hour
B. 100 minute
C. 12 hour
D. 48 hour
ANS : A
V.V.I.
QUESTION

Q. An artificial satellite moves in a circular orbit around the Earth.
Total energy of the satellite is given by E. The potential energy of
the satellite is
A. -2E B. 2E
C. 2E / 3 D. -2E / 3
ANS : B
V.V.I.
QUESTION

Q. Orbital velocity of Earth satellite does not depend on
A. Mass of the Earth
B. Mass of the satellite
C. Radius of the Earth
D. Acceleration due to gravity
ANS : B
V.V.I.
QUESTION

Q. A satellite has kinetic energy K, potential energy V and total energy
E. Which of the following statements is true ?
A. K = -V / 2
B. K = V / 2
C. E = K / 2
D. E = -K / 2
ANS : A
V.V.I.
QUESTION

NEET RANCHI

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