NSO Level 1- Science Olympiad (SOF) Class 9: Questions 994 - 998 of 1128

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Question 994

Question

MCQ▾

As the temperature of a medium increases, the velocity of sound passing through that medium

Choices

Choice (4)Response

a.

Decreases

b.

Remains the same

c.

Increases

d.

All of the above

Question 995

Question

MCQ▾

Here are some points to compare velocity and momentum. Some points are wrongly given. Pick out the incorrect ones.

Table of the Compare Velocity and Momentum
PointMomentumVelocity
1.The product of mass and velocityThe ratio of distance to time
2.Is a vector quantityIs a scalar quantity
3.Rate of change is directly proportional to the force.Rate of change is directly proportional to the force.

Choices

Choice (4)Response

a.

2

b.

1 and 3

c.

1 and 2

d.

2 and 3

Question 996

Question

MCQ▾

A kind of rapid to and fro motion of an object could be its

Choices

Choice (4)Response

a.

Loudness

b.

Sonic boom

c.

Echo

d.

Vibration

Question 997

Question

MCQ▾

The physiological response of the ear to the intensity of sound is called

Choices

Choice (4)Response

a.

Loudness

b.

Vibration

c.

Oscillation

d.

Echo

Question 998

Question

MCQ▾

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

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