NSO Level 1- Science Olympiad (SOF) Class 9: Questions 987 - 991 of 1123

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Question number: 987

» Physics » Sound

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MCQ▾

Question

Sound waves are also known as

Choices

Choice (4) Response

a.

Supersonic waves

b.

Pressure waves

c.

Temperature waves

d.

Shock waves

Question number: 988

» Physics » Force & Laws of Motion

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MCQ▾

Question

Which of the following is the reaction, when you walk on a road?

Choices

Choice (4) Response

a.

The force that the road exerts on your feet

b.

The muscular force you exert on the road

c.

Question does not provide sufficient data or is vague

d.

None of the above

Question number: 989

» Physics » Force & Laws of Motion

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MCQ▾

Question

A constant force acts on an object of mass for a duration of . This increases the velocity of the object from to . . Magnitude of the applied force would be

Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

Question number: 990

» Physics » Force & Laws of Motion

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MCQ▾

Question

Which of the following is not an application of Newton’s First Law of Motion?

Choices

Choice (4) Response

a.

A fielder in the cricket ground gradually pulls his hands back as soon as he catches the ball.

b.

A bus driver reduces the speed by changing the gear before applying break

c.

A rubber ball bounces back after striking on a wall.

d.

In a high jump, the athlete is allowed to fall on sand or cushion bed

Question number: 991

» Physics » Force & Laws of Motion

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MCQ▾

Question

A truck with a mass of is moving on a straight road. The driver applied break. If the frictional force between the vehicle and the road is - the acceleration of the truck would be

Choices

Choice (4) Response

a.

b.

c.

d.

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