# NEET Physics: Questions 357 - 360 of 2142

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## Question number: 357

Assertion-Reason▾

### Assertion (Ꭺ)

If the net external force on the body is zero then its acceleration is zero.

### Reason (Ꭱ)

Acceleration does not depend on force.

### Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

## Question number: 358

MCQ▾

### Question

A particle of mass m slides down from the vertex of semi-hemisphere, without any initial velocity. At what height from horizontal will the particle leave the sphere-

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 359

MCQ▾

### Question

The total mass of an elevator with a 80 kg man in it is 1000 kg. This elevator moving upward with a speed of 8 m/sec, is brought to rest over a distance of 16m. The tension T in the cables supporting the elevator and the force exerted on the man by the elevator floor will respectively be

### Choices

Choice (4) Response

a.

78 N, 624 N

b.

624 N, 78 N

c.

624 N, 7800 N

d.

7800 N, 624 N

## Question number: 360

MCQ▾

### Question

If the earth is treated as a sphere of radius R and mass M. Its angular momentum about the axis of rotation with period T is

### Choices

Choice (4) Response

a.

b.

c.

d.

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