# NEET Physics: Questions 605 - 609 of 2142

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## Question number: 605

MCQ▾

### Question

A magnetizing field of 1600 Am -1 produces a magnetic flux of 2.4 x 10 -5 weber in a bar of iron of area of cross-section 0.2 cm 2. Then,

(1) The magnetic permeability of the bar is 7.5 x 10 -4 TA -1 m

(2) The susceptibility of the bar is 596.1

(3) The magnetic permeability of the bar is 4.1 Wbm” 2

(4) The susceptibility of the bar is 496.1

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

## Question number: 606

MCQ▾

### Question

If a particle moves in a circular path in clockwise direction after entering into a downward vertical magnetic field. The charge on the particle is-

### Choices

Choice (4) Response

a.

Positive

b.

Nothing can be said

c.

neutral

d.

negative

## Question number: 607

MCQ▾

### Question

An α-particle travels at an angle of 30° to a magnetic field 0.8 T with a velocity of 10 5 m/s. The magnitude of force will be-

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 608

MCQ▾

### Question

At magnetic poles of earth, angle of dip is

### Choices

Choice (4) Response

a.

180°

b.

45°

c.

Zero

d.

90°

## Question number: 609

MCQ▾

### Question

A bar magnet of magnetic moment 4.0 A-m 2 is free to rotate about a vertical axis through its center. The magnet is released from rest from east-west position. Kinetic energy of the magnet in north-south position will be (Horizontal component of earth’s magnetic field B H = 25μT)

### Choices

Choice (4) Response

a.

10 -6 J

b.

10 -4 J

c.

0

d.

10 -2 J

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