NSO Level 1- Science Olympiad (SOF) Class 9: Questions 1018 - 1022 of 1123

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Question number: 1018

» Physics » Sound

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MCQ▾

Question

Which of these is not an application of ultrasound?

Choices

Choice (4)Response

a.

It is used to clean spiral tubes

b.

It is used in echocardiography

c.

It is used to detect cracks and flaws in metal blocks

d.

It is used in radars

Question number: 1019

» Physics » Sound

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MCQ▾

Question

In the old age people lost their hearing ability. Which device can be useful for them to support them hearing?

Choices

Choice (4)Response

a.

Gramophone

b.

Saxophone

c.

Microphone

d.

Megaphone

Question number: 1020

» Physics » Force & Laws of Motion

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MCQ▾

Question

The luggage kept on the left of a moving bus falls towards the back end of the bus. This indicates that

Choices

Choice (4)Response

a.

The driver accelerated the bus

b.

The driver applied sudden break

c.

The bus took a U-turn

d.

All of the above

Question number: 1021

» Physics » Force & Laws of Motion

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MCQ▾

Question

According to third law of motion, action and reaction are

Choices

Choice (4)Response

a.

Always act on different bodies in the same direction

b.

Always act on the same body in the same direction

c.

Always act on different bodies in the opposite directions

d.

Question does not provide sufficient data or is vague

Question number: 1022

» Physics » Sound

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MCQ▾

Question

A sound wave is different than a light wave in that a sound wave is

Choices

Choice (4)Response

a.

Capable of existing with a variety of frequencies and a light wave has a single frequency

b.

Not capable of travelling through a vaccum

c.

Not capable of diffracting and a light wave is

d.

Produced by an oscillating object and a light wave is not

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