# Physics (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 41 - 44 of 78

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## Question number: 41

» Physics » Motion and Force

MCQ▾

### Question

A person moves a certain distance in a certain time. If of the distance is covered in of the time with speed v1 and the rest of the distance in of the time speed v2, then is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 42

» Physics » Measurement

Match List-Ⅰ List-Ⅱ▾

### Question

Match the following
List-Ⅰ (Conditions) List-Ⅱ (Physical Quantities)

(A)

Walking on a sandy beach is more tiring than walking on a road

(i)

Gravitational force

(B)

It is difficult to inflate balloon beyond a certain point

(ii)

Magnetic force

(C)

A compass needle always points in the North-South direction

(iii)

Friction

(D)

Going up an inclined plane is more tiring than walking on a horizontal plane

(iv)

Pressure

### Choices

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

a.

• (iii)
• (iv)
• (ii)
• (i)

b.

• (iii)
• (ii)
• (i)
• (iv)

c.

• (ii)
• (iii)
• (iv)
• (i)

d.

• (i)
• (iii)
• (ii)
• (iv)

## Question number: 43

» Physics » Source of Energy

MCQ▾

### Question

Which one among the following waves is called waves of heat energy?

### Choices

Choice (4) Response

a.

Ultraviolet waves

b.

Infrared waves

c.

Microwaves

d.

## Question number: 44

» Physics » Motion and Force

MCQ▾

### Question

Consider the following statements

I. Grease is used to reduce friction in bicycle chain.

II. Ball bearings are used to reduce friction in a fan.

III. Oil can be used to increase friction in a car engine.

IV. Talc can be used to reduce friction when an object is sliding on a surface.

Which of the above statement (s) is/are correct?

### Choices

Choice (4) Response

a.

I, II, and IV

b.

I, II, and III

c.

II, III, and IV

d.

I, III, and IV