Gravitation-Gravitational Acceleration (NEET Physics): Questions 15 - 19 of 19

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Question number: 15

» 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: 16

» 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: 17

» Gravitation » Gravitational Acceleration

MCQ▾

Question

If the radius of the earth were to shrink by 25 % its mass remaining the same, the acceleration due to gravity on the earth’s surface would be given as-

Choices

Choice (4) Response

a.

g0.75

b.

g0.752

c.

g0.252

d.

g0.25

Question number: 18

» Gravitation » Gravitational Acceleration

MCQ▾

Question

On a planet (whose size is the same as that of earth and mass 6 times to the earth) the energy needed to lift a 2 kg mass vertically upwards through 4 m distance on the planet is (g = l0 m/sec 2 on the surface of earth) –

Choices

Choice (4) Response

a.

320 J

b.

480 J

c.

560 J

d.

470 J

Question number: 19

» Gravitation » Gravitational Acceleration

Appeared in Year: 2016

MCQ▾

Question

Starting from the centre of the earth having radius r , the variation of g (acceleration due to gravity) is shown by –

Choices

Choice (4) Response

a.

Variation of g with r - Choice A

Variation of G With R - Choice a

In figure how the centre of the earth having radius r, the variation of g is shown.

b.

Variation of g with r - Choice B

Variation of G With R - Choice B

In figure how the centre of the earth having radius r, the variation of g is shown.

c.

Variation of g with r - Choice C

Variation of G With R - Choice C

In figure how the centre of the earth having radius r, the variation of g is shown.

d.

Variation of g with r - Choice D

Variation of G With R - Choice D

In figure how the centre of the earth having radius r, the variation of g is shown.

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