Gravitation (NEET Physics): Questions 38  42 of 82
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Question number: 38
» Gravitation » Universal Law of Gravitation
Question
Gravitational mass is proportional to,
Choices
Choice (4)  Response  

a.  Gravitational field 

b.  Gravitational force 

c.  Gravitational intensity 

d.  Question does not provide sufficient data or is vague 

Question number: 39
» Gravitation » GeoStationary Satellites
Question
If the moon revolves round the earth 10 times in one year. If the ratio of sunearth distance to earthmoon distance is 393, then the ratio of masses of sun and earth will be –
Choices
Choice (4)  Response  

a.  6.07 ⨯ 10 ^{5} 

b.  4.56 ⨯ 10 ^{5} 

c.  1 

d.  5.93 ⨯ 10 ^{5} 

Question number: 40
» Gravitation » Gravitational Potential
Question
Two satellites S _{1} and S _{2} revolve round a planet in the same direction in circular orbits. Their periods of revolutions are 1 hour and 8 hour respectively. The radius of S _{1} is 10 ^{4 } km. The velocity of S _{2} with respect to S _{1} will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 41
» Gravitation » Kepler's Laws of Planetary Motion
Question
The semimajor axes of the orbits of mercury and mars are respectively 0.387 and 1.524 in astronomical unit. If the period of Mercury is 0.241 year, what is the period of Mars?
Choices
Choice (4)  Response  

a.  3.9 years 

b.  1.9 years 

c.  1.2 years 

d.  3.2 years 

Question number: 42
» Gravitation » Escape Velocity
Question
and denotes the escape velocity from the earth and another planet having twice the radius and the same mean density as the earth. Then which of the following is (are) wrong?
(1)
(2)
(3)
(4)
Select the correct answers with mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1.2 and 3 are correct 

b.  1 and 4 are correct 

c.  1 and 3 are correct 

d.  1 and 2 are correct 
