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 13 of the distance is covered in 23 of the time with speed v1 and the rest of the 23 distance in 13 of the time speed v2, then v1v2 is

Choices

Choice (4) Response
a.

14

b.

12

c.

49

d.

29

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)
  • (ii)
  • (i)
  • (iv)
b.
  • (ii)
  • (iii)
  • (iv)
  • (i)
c.
  • (iii)
  • (iv)
  • (ii)
  • (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.

Radio waves

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

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