NSO Level 1- Science Olympiad (SOF) Class 9: Questions 934 - 939 of 1123

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Question number: 934

» Physics » Force & Laws of Motion

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MCQ▾

Question

A ball lying on the ground remains still unless and until a player kicks it. This property of the ball is called

Choices

Choice (4) Response

a.

Force

b.

Inertia

c.

Impulse

d.

Momentum

Question number: 935

» Physics » Sound

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MCQ▾

Question

A key of mechanical piano struck gently and then struck again but much harder this time. In the second case

Choices

Choice (4) Response

a.

Sound will be louder and pitch is higher

b.

Loudness and pitch will remain unaffected

c.

Sound will be louder but pitch will be lower

d.

Sound will be louder but pitch will not be different

Question number: 936

» Physics » Sound

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MCQ▾

Question

Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting

Choices

Choice (4) Response

a.

Intensity of sound

b.

Frequency of the sitar string with the frequency of other musical instrument

c.

Amplitude of sound

d.

Loudness of sound

Question number: 937

» Physics » Sound

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MCQ▾

Question

A sound of single frequency is called as

Choices

Choice (4) Response

a.

Pitch

b.

Noise

c.

Note

d.

Tone

Question number: 938

» Physics » Sound

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MCQ▾

Question

The persistence of sound in an auditorium is the result of repeated reflections of sound and hence called as

Choices

Choice (4) Response

a.

Oscillation

b.

Reverberation

c.

Loudness

d.

Echo

Passage

DIRECTION: A boy throws a ball on a wall with different velocities and the ball bounces back as shown in the figure. Observe the pictures carefully and answer questions below.

The ball bounces back as shown in the figure

The Ball Bounces Back as Shown in the Figure

The ball bounces back as shown in the figure

Question number: 939 (1 of 4 Based on Passage) Show Passage

» Physics » Force & Laws of Motion

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MCQ▾

Question

If the same ball is used in both the cases, in which case the force exerted by the wall on the ball would be greater?

Choices

Choice (4) Response

a.

Case I

b.

Case II

c.

Question does not provide sufficient data or is vague

d.

All of the above

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