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Question (1)

QN0035424

As we go down below the earth's surface, the acceleration due to gravity decreases by a factor distance, radius of earth)

(A)
(B)
(C)
(D)
remains constant

Correct Answer: C

Explanation:

Acceleration due to gravity varies with dpth as

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Question (2)

QN0035425

The weight of a body at the centre of the earth is

(A)
zero
(B)
infinite
(C)
same as on the surface of earth
(D)
None of these

Correct Answer: A

Explanation:

weight of the body at the centre of the earth is zero, because the value of at centre is zero.

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Question (3)

QN0035426

The variation of acceleration due to gravity with distance (r) from the center of the earth is correctly represented by: (Given = radius of earth)

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

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Question (4)

QN0035427

A particle is suspended from a spring and it stretches the spring by on the surface of earth. By how much amount the same particle will stretch the same spring at a place above the surface of earth.

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

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Question (5)

QN0035428

The height at which the acceleration due to gravity becomes (where the acceleration due to gravity on the surface of the earth) in terms of , the radius of the earth, is

(A)
(B)
(C)
(D)

Correct Answer: D

Explanation:

We know that

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Question (6)

QN0035429

At what height from the ground will the value of be the same as that in deep mine below the surface of earth?

(A)
(B)
(C)
(D)

Correct Answer: D

Explanation:

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Question (7)

QN0035430

If a person goes to height equal to the radius of the earth, from its surface, then his weight relative to the weight on earth (W) will be

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

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Question (8)

QN0035431

If value of acceleration due to gravity is ' ' at a height 50 above the surface of earth, then at what depth inside the earth will the acceleration due to gravity be same as ' '?

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

As we know,

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Question (9)

QN0035432

The gravitational field strength due to a solid sphere (mass , radius ) varies with distance from centre as

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

for and for so option (a) is correct.

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Question (10)

QN0035433

There are gravitational lines of force inside a spherically symmetric shell.

(A)
infinitely many
(B)
Zero
(C)
varying number depending upon surface area
(D)
varying number depending upon volume

Correct Answer: B

Explanation:

There is no gravitational field in the shell.

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Question (1)

As we go down below the earth's surface, the acceleration due to gravity decreases by a factor distance, radius of earth)

Explanation:

Link:

Question (2)

The weight of a body at the centre of the earth is

Explanation:

Link:

Question (3)

The variation of acceleration due to gravity with distance (r) from the center of the earth is correctly represented by: (Given = radius of earth)

Explanation:

Link:

Question (4)

A particle is suspended from a spring and it stretches the spring by on the surface of earth. By how much amount the same particle will stretch the same spring at a place above the surface of earth.

Explanation:

Link:

Question (5)

The height at which the acceleration due to gravity becomes (where the acceleration due to gravity on the surface of the earth) in terms of , the radius of the earth, is

Explanation:

Link:

Question (6)

At what height from the ground will the value of be the same as that in deep mine below the surface of earth?

Explanation:

Link:

Question (7)

If a person goes to height equal to the radius of the earth, from its surface, then his weight relative to the weight on earth (W) will be

Explanation:

Link:

Question (8)

If value of acceleration due to gravity is ' ' at a height 50 above the surface of earth, then at what depth inside the earth will the acceleration due to gravity be same as ' '?

Explanation:

Link:

Question (9)

The gravitational field strength due to a solid sphere (mass , radius ) varies with distance from centre as

Explanation:

Link:

Question (10)

There are gravitational lines of force inside a spherically symmetric shell.

Explanation:

Link:

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