Gravitation (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 37  40 of 84
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Question number: 37
» Gravitation » Universal Law of Gravitation
Question
An artificial satellite of the earth is to be established in the equatorial plane of the earth and to an observer at the equator it is required that the satellite will move eastward, completing one round trip per day. The distance of the satellite from the center of the earth will be (The mass of the earth is 6.00 ⨯ 10 ^{24} kg and its angular velocity = 7.30 ⨯ 10 ^{5} rad/sec)
Choices
Choice (4)  Response  

a.  2.66 ⨯ 10 ^{7} m. 

b.  2.66 ⨯ 10 ^{6} m. 

c.  2.66 ⨯ 10 ^{3} m. 

d.  2.66 ⨯ 10 ^{5} m. 

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. 

