NEET Physics: Questions 1994 - 1998 of 2099

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Question number: 1994

» Gravitation » Gravitational Acceleration

MCQ▾

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.

x=h

b.

x=2h

c.

x=h2

d.

x=h2

Question number: 1995

» Gravitation » Gravitational Acceleration

MCQ▾

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: 1996

» Gravitation » Universal Law of Gravitation

Assertion-Reason▾

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: 1997

» Gravitation » Gravitational Potential

MCQ▾

Question

Two bodies of mass 10 4 kg and 10 5 kg are lying l m apart the gravitational potential at the mid-point of the line joining them is -

Choices

Choice (4) Response
a.

147×105Joulekg

b.

0

c.

1.47Joulekg

d.

1.47Joulekg

Question number: 1998

» Rotational Motion » Moment of Inertia

MCQ▾

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

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