# Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 65 - 70 of 136

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## Question number: 65

» Physics » Light

MCQ▾

### Question

Critical angle of light passing from glass to water is minimum for

### Choices

Choice (4) Response

a.

green colour

b.

Yellow colour

c.

violet colour

d.

red colour

## Question number: 66

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

Which of the following materials has got the maximum retentivity?

### Choices

Choice (4) Response

a.

Zinc

b.

hard iron

c.

Copper

d.

Soft iron

## Question number: 67

» Physics » Measurement

Match List-Ⅰ List-Ⅱ▾

### Question

Match the following:
 List-Ⅰ List-Ⅱ (A) Equation (i) Magnitude of velocity (B) Equation (ii) Acceleration (C) Equation (iii) Rate of change of speed (D) Equation (iv) Velocity

### Choices

Choice (4) Response
• (A)
• (B)
• (C)
• (D)

a.

• (ii)
• (iii)
• (i)
• (iv)

b.

• (i)
• (iii)
• (iv)
• (ii)

c.

• (iii)
• (iv)
• (i)
• (ii)

d.

• (ii)
• (iv)
• (i)
• (iii)

## Question number: 68

» Physics » Magnetism & Electricity at Work

MCQ▾

### Question

The magnetic field at P due to the magnet NS is

### Choices

Choice (4) Response

a.

along OP

b.

along PO

c.

parallel to NS

d.

None of the above

## Question number: 69

» Physics » Sound

MCQ▾

### Question

Doppler effect is depend on

### Choices

Choice (4) Response

a.

velocity of listener

b.

distance between source and listener

c.

velocity of source

d.

All of the above

## Question number: 70

» Physics » Motion and Force

MCQ▾

### Question

Bubbles of gas, escaping from the mud at the bottom of a deep lake, rise to the surface. As the bubbles rise, the bubble gets larger. Why is this?

### Choices

Choice (4) Response

a.

Water pressure on the bubbles increases

b.

Water pressure on the bubbles decreases

c.

Atmospheric pressure on the bubbles decreases

d.

Atmospheric pressure on the bubbles increases

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