Gravitation (NEET Physics): Questions 47  51 of 82
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Question number: 47
» Gravitation » Universal Law of Gravitation
Question
Which of the following statements about the gravitational constant are false?
(1) It is a force
(2) It has no unit
(3) It has same value in all system of units
(4) It doesn’t depend on the value of the masses
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  2 and 4 are correct  
b.  1 and 2 are correct  
c.  1, 2 and 3 are correct  
d.  1 and 3 are correct 
Question number: 48
» Gravitation » Universal Law of Gravitation
Question
A mass M splits into two parts m and (M  m), which are then separated by a certain distance. What ratio of maximizes the gravitational force between the parts?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 49
» Gravitation » Universal Law of Gravitation
Question
A particle is suspended from a spring and it stretches the spring by 1 cm on the surface of earth. The same particle will stretches the same spring at a place 800 km above earth surface by 
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 50
» Gravitation » Gravitational Acceleration
Question
At what height above the earth’s surface the acceleration due to gravity will be of its value at the earth’s surface? Radius of earth is 6400 km
Choices
Choice (4)  Response  

a.  25600 km  
b.  2228 km  
c.  12800 km  
d.  2560 km 
Question number: 51
» Gravitation » Universal Law of Gravitation
Question
Three particles of equal mass m are situated at the vertices of an equilateral triangle of side l. What should be the velocity of each particle, so that they move on a circular path without changing l?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
