## GRAVITATION QUIZ-1

JEE Advanced Physics Syllabus can be referred by the IIT aspirants to get a detailed list of all topics that are important in cracking the entrance examination. JEE Advanced syllabus for Physics has been designed in such a way that it offers very practical and application-based learning to further make it easier for students to understand every concept or topic by correlating it with day-to-day experiences. In comparison to the other two subjects, the syllabus of JEE Advanced for physics is developed in such a way so as to test the deep understanding and application of concepts.

Gravitation is an easy to understand and a highly scoring topic. It might have a 1% weightage in the entire JEE Physics portion but do not neglect. You can practice these questions on regular basis to know what are the important points to remember at the moment when gravitation question comes.

Q1. Figure shows a planet in an elliptical orbit around the Sun S. Where is the kinetic energy of the planet maximum?

•  P1
•  P2
•  P3
•  P4
Q2. The distance between the centre of the Moon and the earth is D. The mass of the earth is 81 times the mass of the Moon. At what distance from the centre of the earth, the gravitational force will be zero?
•  D/2
•  2D/3
•  4D/3
•  9D/10
Q3. Suppose, the acceleration due to gravity at the earth's surface is 10 ms-2 and at the surface of Mars is 4.0 m s-2. A 60 kg passenger goes from the earth of Mars in a spaceship moving with a constant velocity. Neglect all other objects in the sky. Which part of the figure best represents the weight (net gravitational force) of the passenger as a function of time?

•   A
•  B
•  C
•  D

Q4. The charge in the value of g at a height 'h' above the surface of earth is the same as at a depth 'd' below the earth. When both d and h are much smaller than the radius of earth, then which one of the following is correct?
•  d=h/2
•  d=3h/2
•  d=2h
•  d=h
Q5. The gravitational force between two objects is proportional to 1/R (and not as 1/R2) where R is separation between them, then a particle in circular orbit under such a force would have its orbital speed v proportional to
•  1/R2
•  R0
•  R1
•  1/R
Q6. A skylab of mass m kg is first launched from the surface of the earth in a circular orbit of radius 2R (from the centre of the earth) and then it is shifted from this circular orbit to another circular orbit of radius 3R. The minimum energy required to place the lab in the first orbit and to shift the lab from first orbit to the second orbit are
•  mgR, mgR
•  3mgR/4 , mgR/6
• 3mgR/4 , 3gR/12
•  2mgR, mgR
Q7. A tunnel is dug along a diameter of the earth. If Me and Re are the mass and radius, respectively, of the earth, then the force on a particle of mass m placed in the tunnel at a distance r from the centre is
•  (GMe m)/(Re3 )r
•  (GMe m)/(Re3r)
•  (GMemRe3)/(r)
•  (GMe m)/(Re2 )r
Q8. A comet is in highly elliptical orbit around the Sun. The period of the comet's orbit is 90 days. Some statements are given are given regarding the collision between the comet and the earth. Mark the correct statement. [Mass of the Sun= 2×1030 kg, mean distance between the earth and the Sun=1.5×1011 m]
•  Collision is there
•  Collision is not possible
•  Collision may or may not be there
•  Enough information is not given
Q9. Two planets have radii r1 and r2 and their densities are ρ_1 and ρ_2 respectively. The ratio of acceleration due to gravity on them will be
•  r1 ρ1:r2 ρ2
•  1 ρ1:r22 ρ22
•  r12 ρ1:r22 ρ2
•  r1 ρ2:r2 ρ1
Q10. A ball of mass m is fired vertically upwards from the surface of the earth with velocity nve, where ve is the escape velocity and n>1. To what height will the ball rise? Neglecting air resistance, take radius of the earth as R
•  R/n2
•  R/(1-n2)
•  Rn2/(1-n2)
• Rn2 #### Written by: AUTHORNAME

AUTHORDESCRIPTION ## Want to know more

Please fill in the details below:

## Latest NEET Articles\$type=three\$c=3\$author=hide\$comment=hide\$rm=hide\$date=hide\$snippet=hide

Name

ltr
item
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE: Gravitation - Quiz 1
Gravitation - Quiz 1