Physics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 18 - 22 of 136

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Question number: 18

» Physics » Motion and Force

MCQ▾

Question

A person is standing in an elevator. In which situation, he finds his weight less than actual when

Choices

Choice (4) Response

a.

the elevator moves downward with uniform velocity

b.

the elevator moves upward with constant acceleration

c.

the elevator moves upward with uniform velocity

d.

the elevator moves downward with constant acceleration

Question number: 19

» Physics » Motion and Force

MCQ▾

Question

Inertia is that property of a body by virtue of which the body is

Choices

Choice (4) Response

a.

unable to change by itself the direction of motion

b.

unable to change by itself the state of rest and of uniform linear motion

c.

unable to change by itself the state of uniform motion

d.

unable to change by itself the state, the rest

Question number: 20

» Physics » Motion and Force

MCQ▾

Question

When the speed of a moving body is doubled

Choices

Choice (4) Response

a.

its kinetic energy is doubled

b.

its potential energy is doubled

c.

its acceleration is doubled

d.

its momentum is doubled

Question number: 21

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

A current of 0.5 A is drawn by a filament of an electric bulb for half an hour. What is the amount of electric charge that flows through the circuit?

Choices

Choice (4) Response

a.

900°C

b.

9°C

c.

5°C

d.

600°C

Question number: 22

» Physics » Motion and Force

MCQ▾

Question

A rider on horseback falls when horse starts running all of a sudden because

Choices

Choice (4) Response

a.

inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse

b.

rider is taken back

c.

rider is suddenly afraid of falling

d.

All of the above

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