NSO Level 1- Science Olympiad (SOF) Class 9: Questions 998 - 1005 of 1123

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Question number: 998

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MCQ▾

Question

The momentum of a body is dependent on

Choices

Choice (4) Response

a.

Mass and velocity

b.

Time duration of the force

c.

Magnitude of the force exerted

d.

All a. , b. and c. are correct

Question number: 999

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MCQ▾

Question

The amount of sound energy passing each second through unit area is called the

Choices

Choice (4) Response

a.

Velocity of sound

b.

Speed of sound

c.

Intensity of sound

d.

Frequency of sound

Question number: 1000

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MCQ▾

Question

Sound travel fastest in

Choices

Choice (4) Response

a.

Water

b.

Steel

c.

Air

d.

Vaccum

Question number: 1001

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MCQ▾

Question

The loudness or softness of a sound is determined basically by its

Choices

Choice (4) Response

a.

Amplitude

b.

Frequency

c.

Pitch

d.

Wavelength

Question number: 1002

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MCQ▾

Question

Momentum of a body is calculated by the formula

Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question number: 1003

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MCQ▾

Question

Change in momentum of a body in motion is called

Choices

Choice (4) Response

a.

Impulse

b.

Inertia

c.

Force

d.

Momentum

Question number: 1004

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MCQ▾

Question

Ear drum is also called as

Choices

Choice (4) Response

a.

Auditory nerve

b.

Auditory canal

c.

Oval window

d.

Tympanic membrane

Question number: 1005

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MCQ▾

Question

According to Newton’s third law of motion, the action and reaction are equal in magnitude but in recoil of the gun, the gun moves a short distance backwards as the bullet moves a long distance with a very high velocity. The explanation to this is

Choices

Choice (4) Response

a.

The impact of force depends on the mass and acceleration

b.

The gun has a much greater mass than the bullet

c.

The velocity of the bullet is much larger than that of the gun

d.

All a. , b. and c. are correct

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