# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 682 - 686 of 2320

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## Passage

A charge particles q enters in a magnetic field with the velocity . Neglect any force other than magnetic force. Now answer the following question.

## Question number: 682 (3 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

Magnetic force F acting on charge is proportional to –

### Choices

Choice (4)Response

a.

b.

c.

d.

F does not depend on x or y co-ordinate

## Question number: 683

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MCQ▾

### Question

A magnet of moment M is lying in a magnetic field of induction B. W 1 is the work done in turning it from 0° to 60° and W 2 is the work done in turning it from 30° to 90°.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 684

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MCQ▾

### Question

An air-solenoid has 500 turns of wire in its 40 cm length. If the current in the wire be 1.0 ampere then the magnetic field on the axis inside the solenoid is –

### Choices

Choice (4)Response

a.

0.157 gauss

b.

15.7 gauss

c.

0.0157 gauss

d.

1.57 gauss

## Question number: 685

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MCQ▾

### Question

The length, breadth and mass of two bar magnets are same but their magnetic moments are 3M and 2M respectively. These are joined pole to pole and are suspended by a string. When oscillated in a magnetic field of strength B, the time period obtained is 5sec. If the poles of either of the magnets are reverse then the time period of the combination in the same magnetic field will be -

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 686

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MCQ▾

### Question

A particle with charge q, moving with a momentum p, enters a uniform magnetic field normally. The magnetic field has magnitude B and is confined to a region of width d, where The particle is deflected by an angle θ in crossing the field. Then

### Choices

Choice (4)Response

a.

b.

c.

d.

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