NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1993 - 1997 of 2142

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Question number: 1993

» 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.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1994

» 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: 1995

» 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: 1996

» 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.

Equation

b.

0

c.

Equation

d.

Equation

Question number: 1997

» 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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