# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 617 - 621 of 2320

Access detailed explanations (illustrated with images and videos) to 2320 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 600.00 or

How to register?

## Question number: 617

Edit
MCQ▾

### Question

An electron beam passes through a magnetic field of 2 x 10 -3 weber/m 2 and an electric field of 1.0 x 10 4 volt/m both acting simultaneously. If the electric field is removed, what will be the radius of the electron path?

### Choices

Choice (4)Response

a.

2.43 cm.

b.

3.43 cm.

c.

1.43 cm.

d.

0.43 cm

## Question number: 618

Edit
MCQ▾

### Question

A circular coil has radius 4 cm and 20 number of turns carries a current of 3 ampere. It is placed in a magnetic field of intensity 0.5 weber/m 2. The magnetic dipole moment of the coil is, (take

### Choices

Choice (4)Response

a.

0.15 ampere m 2

b.

0.45 ampere m 2

c.

0.3 ampere m 2

d.

0.6 ampere m 2

## Question number: 619

Edit
MCQ▾

### Question

Dimensional formula of μ 0 is-

### Choices

Choice (4)Response

a.

MLT 2 A -2

b.

MLT -2 A 2

c.

MLT 2 A 2

d.

MLT -2 A -2

## Question number: 620

Edit
MCQ▾

### Question

A solenoid of length 0.2m has 500 turns on it. If 8.71 x 10 -6 Weber/m 2 be the magnetic field at an end of the solenoid, then the current flowing in the solenoid is –

### Choices

Choice (4)Response

a.

b.

A

c.

d.

## Question number: 621

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

The permeability of a ferromagnetic material dependent on the magnetic field.

### Reason (Ꭱ)

Permeability of a material is a constant quantity.

### Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

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

Developed by: