# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 569 - 573 of 2142

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## Question number: 569

MCQ▾

### Question

A l m long conducting wire is lying at right angles to the magnetic field. A force of 1 kg weight is acting on it in a magnetic field of 0.98 tesla. The current flowing in it will be,

### Choices

Choice (4) Response

a.

10 A

b.

100 A

c.

1A

d.

0

## Question number: 570

MCQ▾

### Question

In the example above, after how much time, particle comes to the starting point for the first time, (mass of particle = m)

### Choices

Choice (4) Response

a.

b.

Never

c.

It will leave the circular path before coming to the starting point

d.

## Question number: 571

MCQ▾

### Question

current of 1.0 ampere is flowing in the sides of an equilateral triangle of side 4.5 x 10 -2 m. Find the magnetic field at the centroid of the triangle.

(Permeability constant . )

### Choices

Choice (4) Response

a.

2.0 x 10 -5 eber/m 2

b.

7.0 x 10 -12 weber/m 2

c.

6.0 x 10 -8 weber/m 2

d.

4.0 x 10 -5 weber/m 2

## Question number: 572

MCQ▾

### Question

The length of a bar magnet is 10 cm and its pole strength is 10 -3 Weber. It is placed in a magnetic field of induction 4 π x 10 -3 Tesla in a direction making an angle 30° with the field direction. The value of torque acting on the magnet will be -

### Choices

Choice (4) Response

a.

2 π x 10 -5 N-m

b.

None

c.

0.5 x 10 2 N-m

d.

2 π x 10 -7 N-m

## Question number: 573

Assertion-Reason▾

### Assertion (Ꭺ)

The coil is bound over the metallic frame in moving coil galvanometer.

### Reason (Ꭱ)

The metallic frame help in making steady deflection without any oscillation.

### 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.

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

d.

Ꭺ is false but Ꭱ is true

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