# Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 29 - 34 of 136

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## Question number: 29

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

A current flows in a conductor from East to West. The direction of the magnetic field at a point above the conductor is

### Choices

Choice (4) Response

a.

towards South

b.

towards North

c.

towards East

d.

towards West

## Question number: 30

» Physics » Motion and Force

MCQ▾

### Question

The lines of force of uniform magnetic field

### Choices

Choice (4) Response

a.

intersect

b.

must be convergent

c.

must be parallel to each other

d.

must be divergent

## Question number: 31

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

In a transformer, number of turns in the primary are 140 and that in secondary are 280. If current in primary is 4 A, then current in secondary is

### Choices

Choice (4) Response

a.

4A

b.

10A

c.

2A

d.

6A

## Question number: 32

» Physics » Light

MCQ▾

### Question

Two thin lenses of focal lengths f 1 and f 2 are placed in contact. The focal length of the composite lenses will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 33

» Physics » Light

MCQ▾

### Question

Figure shows when the as shown two rays A and B being reflected by a mirror and going as A’ and B’. The mirror is

### Choices

Choice (4) Response

a.

may be any spherical mirror

b.

is plane

c.

is concave

d.

is convex

## Question number: 34

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

Which of the following is the most suitable material for making permanent magnet?

### Choices

Choice (4) Response

a.

Steel

b.

Soft iron

c.

Copper

d.

Nickel

f Page