NSO Level 1- Science Olympiad (SOF) Class 9: Questions 972 - 978 of 1123

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Question number: 972

» Physics » Sound

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MCQ▾

Question

To catch their prey, bats use

Choices

Choice (4) Response

a.

Infrasound waves

b.

Ultrasound waves

c.

Audible sound waves

d.

All of the above

Question number: 973

» Physics » Force & Laws of Motion

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MCQ▾

Question

A toy car is moving with a velocity of along a smooth floor and comes to rest after covering a distance of . The time taken by the car to come to rest will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 974

» Physics » Force & Laws of Motion

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MCQ▾

Question

A constant force of acts on an object of mass and velocity for a duration of The resultant velocity would be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 975

» Physics » Sound

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MCQ▾

Question

A human heart, on an average, is found to beat a minute. Its frequency will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 976

» Physics » Sound

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MCQ▾

Question

When the speed of any object exceeds the speed of sound, it is said to be travelling in

Choices

Choice (4) Response

a.

Supersonic speed

b.

Ultrasonic speed

c.

Giga volt speed

d.

Mega sonic speed

Question number: 977

» Physics » Sound

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MCQ▾

Question

The sound produced due to a mixture of several frequencies is called a

Choices

Choice (4) Response

a.

Tone

b.

Note

c.

Pitch

d.

Noise

Question number: 978

» Physics » Sound

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MCQ▾

Question

A person has a hearing range from to what are the typical wavelengths of sound waves in air corresponding to those two frequencies.

Choices

Choice (4) Response

a.

b.

c.

d.

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