GRAVITATION QUIZ-14
Dear Readers,
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.Statement 1: The speed of satellite always remains
constant in an orbit
Statement 2: The speed of a satellite depends on its path
Statement 2: The speed of a satellite depends on its path
Solution
Q2.Statement 1:If a pendulum is suspended in a lift and lift
is falling freely, then its time period becomes infinite
Statement 2:Free falling body has acceleration equal to acceleration due to gravity
Statement 2:Free falling body has acceleration equal to acceleration due to gravity
Solution
Q3.Statement 1: The magnitude of the gravitational potential
at the surface of solid sphere is less than that of the centre
of sphere
Statement 2: Due to the solid sphere, the gravitational potential is the same within the sphere
Statement 2: Due to the solid sphere, the gravitational potential is the same within the sphere
Solution
Q4.Statement 1: Consider a satellite moving in an elliptical orbit around the earth. As the satellite moves, the work done by the gravitational force of the earth on the satellite for any small part of the orbit is zero
Statement 2: KE of the satellite in the above described case is not constant as it moves around the earth
Solution
Q5.
Solution
Q6.Statement 1: Kepler's second law can be understood by
conservation of angular momentum principle
Statement 2: Kepler's second law is related with areal velocity which can further be proved to be based on conservation of angular momentum as (dA/dt)=(r^2 ω)/2
Statement 2: Kepler's second law is related with areal velocity which can further be proved to be based on conservation of angular momentum as (dA/dt)=(r^2 ω)/2
Solution
Q7 Statement 1: For a mass M kept at the centre of a cube of
side ‘a’, the flux of gravitational field passing through its
sides is 4 π GM
Statement 2: If the direction of a field due to a point source is radial and its dependence on the distance ‘r’ from the source is given as 1/r2 , its flux through a closed surface depends only on the strength of the source enclosed by the surface and not on the size or shape of the surface
Statement 2: If the direction of a field due to a point source is radial and its dependence on the distance ‘r’ from the source is given as 1/r2 , its flux through a closed surface depends only on the strength of the source enclosed by the surface and not on the size or shape of the surface
Solution
Q8.Statement 1: For a satellite revolving very near to the
earth's surface the time period of revolution is given by 1 h
24 min
Statement 2: The period of revolution of a satellite depends only upon its height above the earth's surface
Statement 2: The period of revolution of a satellite depends only upon its height above the earth's surface
Solution
Q9.Statement 1: Two satellites are following one another in
the same circular orbit. If one satellite tries to catch
another (leading one) satellite, then it can be done by
increasing its speed without changing the orbit
Statement 2: The energy of earth satellites system in circular orbit is given by E=-GMm/2r, where r is the radius of the circular orbit
Statement 2: The energy of earth satellites system in circular orbit is given by E=-GMm/2r, where r is the radius of the circular orbit
Solution
(c)
Q10. Statement 1: If earth suddenly stops rotating about its
axis then the value of acceleration due to gravity will
becomes same at all the places
Statement 2: The value of acceleration due to gravity is independent of rotation of earth
Statement 2: The value of acceleration due to gravity is independent of rotation of earth
Solution
