GRAVITATION-QUIZ -1

GRAVITATION QUIZ-1

Dear Readers,

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background. 

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced. 

Q1. Radius of orbit of satellite of earth is R. Its kinetic energy is proportional to

•  1R
•  1R
•  R
•  1R3/2

Solution

Q2.A satellite is to revolve round the earth in a circle of radius 8000 km. The speed at which this satellite be projected into an orbit, will be

•  3 km/s
•  16 km/s
•  7.15 km/s
•  8 km/s

Solution

Q3.  Time speed of revolution of a nearest satellite around a planet of radius R is T. Period of revolution around another planet, whose radius is 3R but having same density is

•   T
•  3T
•  9T
•  33T

Solution

Q4. The acceleration due to gravity increase by 0.5 % when we go from the equator to the poles. What will be the time period of the pendulum at the equator which beats seconds at the poles?

•  1.950 s
•  1.995 s
•  2.050 s
•  2.005 s

Solution

Q5.Two identical thin rings each of radius R are coaxially placed at a distance R. If the rings have a uniform mass distribution and each has mass m1 and m2 respectively, then the work done in moving a mass m from centre of one ring to that of the other is

•  Gmm1(2+1)m2R
•  Gm(m1-m2)(2+1)2R
•  Gm2(m1+m2)R
•  Zero

Solution

Q6. Kepler’s second law regarding constancy of aerial velocity of a planet is consequence of the law of conservation of

•  Energy
•  Angular momentum
•  Linear momentum
•  None of these

Solution

Q7.The periodic time of a communication satellite is

•  6 hours
•  12 hours
•  18 hours
•  24 hours

Solution

Q8.The curves for potential energy (U) and kinetic energy (Ek) of a two particle system are shown in figure. At what points the system will be boun

•  Only at point D
•  Only at point A
•  At point D and A
•  At points A,BandC

Solution
The system will be bound at points where total energy is negative. In the given curve at point A, B and C the P.E. is more than K.E.

Q9.The acceleration of a body due to the attraction of the earth (radius R) at a distance 2R from the surface of the earth is (g = acceleration due to gravity at the surface of the earth)

•  g9
•  g3
•  g4
•  g

Solution

Q10. Two equal mass m and m are hung from balance whose scale pans differ in vertical height by h. Calculate the error in weighing. If any, in terms of density of earth

•  23πρR3Gm
•  83πρGmh
•  83πρR3Gm
•   43πρGm2h

Solution