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Gravitation QUIZ-10

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. A shell of mass M and radius R has a point mass m placed at a distance r from its centre.
  •  

  •  

  •  

  •  

Solution




Q2.92. The angular velocity of the earth with which it has to rotate so that acceleration due to gravity on 60° latitude becomes zero is (Radius of earth =6400 km. At the poles g=10 ms-2)
  •  2.5×10-3rad/s
  •  5.0×10-1rad/s
  •  1×101rad/s
  •  7.8×10-2rad/s
Solution





Q3.  In a satellite ,if the time of revolution is T,then KE is proportional to
  •   1T
  •  1T2
  •  1T3
  •  T-2/3
Solution





Q4. Three identical bodies of mass M are located at the vertices of an equilateral triangle of side L. They revolve under the effect of mutual gravitational force in a circular orbit, circumscribing the triangle while preserving the equilateral triangle. Their orbital velocity is
  •  GML
  •  3GM2L
  •  3GML
  •  2GM3L
Solution






Q5.Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then
  •  g'=2g
  •  g'=3g
  •  g'=4g
  •  g'=5g
Solution



 




Q6. An artificial satellite of the earth moves at an altitude to h=670 km along a circular orbit. The velocity of the satellite is
  •  7.5Kms-1
  •  8.5Kms-1
  •  11.2Kms-1
  •  4.5Kms-1
Solution





Q7.Escape velocity of a body of 1 kg mass on a planet is 100 m/sec. Gravitational Potential energy of the body at the Planet is
  •  -5000j
  •  -1000j
  •  -2400j
  •  5000j
Solution





Q8.A particle of mass m is placed at the centre of a uniform spherical shell of mass 3 m and radius R. The gravitational potential on the surface of the shell is
  •  -GmR
  •  -3GmR
  •  -4GmR
  •  -2Gmr
Solution





Q9.The work that must be done in lifting a body of weight P from the surface of the earth to a height h is
  •  PRhR-h
  •  R+hPRh
  •  PRhR+h
  •  R-hPRh
Solution




Q10. Two spherical planets A and B have same mass but densities in the ratio 8:1. For these planets, the ratio of acceleration due to gravity at the surface of A to its value at the surface of B is
  •  1:4
  •  1:2
  •  4:1
  •  8:1
Solution






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Best IIT JEE Coaching Institute in Delhi | NEET Coaching Institute in Delhi: GRAVITATION QUIZ 10
GRAVITATION QUIZ 10
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