GRAVITATION QUIZ-8

Gravitation QUIZ-8

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. If a body describes a circular motion under inverse square field, the time taken to complete one revolution T is related to the radius of the of the circular orbit is

•  T∝r
•  T∝r2
•  T2r3
•  T∝r4

Solution

Q2.Which of the following graphs between the square of the time period and cube of the distance of the planet from the sun is correct?

•  
  
  
  
•  
  
  
  
•  
  
  
  
•  
  
  
  

Solution

Q3.  Two identical solid copper spheres of radius R are placed in contact with each other.The gravitational attraction between them is propotional to

•   R2
•  R-2
•  R4
•  R-4

Solution

Q4. If the density of a small planet is the same as that of earth, while the radius of the planet is 0.2 times that of the earth, the gravitational acceleration of the surface of that planet is

•  0.2g
•  0.4g
•  2g
•  4g

Solution

Q5.Acceleration due to gravity on moon is 1/6 of the acceleration due to gravity on earth. If the ratio of densities of earth (ρe) and moon (ρm) is em=53 then radius of moon (Rm) in terms of Re will be

•  518Re
•  16Re
•  318Re
•  123Re

Solution

Q6. Gravitational field is

•  Conservative
•  Non conservative
•  Electromagnetic
•  Magnetic

Solution

Q7.The mass of a planet is six times that of the earth. The radius of the planet is twice that of the earth. If the escape velocity from the earth is v, then the escape velocity from the planet is

•  3v
•  2v
•  v
•  5v

Solution

Q8.Accelerationdue to gravity is maximum at (R is the radius of earth)

•  A height R2 from the earth's surface
•  The centre of the earth
•  The surface of the earth
•  A depth R2 fromthe earth's surface

Solution

Q9.An artificial satellite is revolving round the earth in a circular orbit. Its velocity is half the escape velocity. Its height from earth’s surface is

•  6400 Km
•  12800 Km
•  3200 km
•  1600 Km

Solution

Q10. A satellite is revolving round the earth in an orbit of radius r with time period T. If the satellite is revolving round the earth in an orbit of radius r+r(r≪r) with time period T+T(T≪T) then

•  TT=32Δrr
•  TT=23Δrr
•  TT=Δrr
•  TT=-Δrr

Solution