NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1993  1997 of 2142
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Question number: 1993
» Gravitation » Gravitational Acceleration
Question
If the value of ‘g’ at a height h above the surface of the earth is the same as at a depth x below it, then (both x and h being much smaller than the radius of the earth)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 1994
» Gravitation » Gravitational Acceleration
Question
What would be the angular speed of earth, so that bodies lying on equator may experience weightlessness? (g = 10 m/s ^{2} and radius of earth = 6400 km)
Choices
Choice (4)  Response  

a.  1.25 ⨯ 10 ^{2} rad/sec 

b.  1.25 ⨯ 10 ^{1} rad/sec 

c.  1.25 ⨯ 10 ^{4} rad/sec 

d.  1.25 ⨯ 10 ^{3} rad/sec 

Question number: 1995
» Gravitation » Universal Law of Gravitation
Assertion (Ꭺ)
Gravitational force between two particles is negligibly small compared to the electrical force.
Reason (Ꭱ)
The electrical force is experienced by charged particles only.
Choices
Choice (4)  Response  

a.  Ꭺ is false but Ꭱ is true 

b.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

c.  Ꭺ is true but Ꭱ is false 

d.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

Question number: 1996
» Gravitation » Gravitational Potential
Question
Two bodies of mass 10 ^{4} kg and 10 ^{5} kg are lying l m apart the gravitational potential at the midpoint of the line joining them is 
Choices
Choice (4)  Response  

a. 


b.  0 

c. 


d. 


Question number: 1997
» Rotational Motion » Moment of Inertia
Question
Two discs of the same material and thickness have radii 0.4 m and 0.8 m. Their moments of inertia about their axes will be in the ratio of
Choices
Choice (4)  Response  

a.  1: 81 

b.  1: 27 

c.  1: 16 

d.  1: 3 
