NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1603 - 1608 of 2028

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Question number: 1603

» Physics » Sound

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MCQ▾

Question

In monsoon, thunder and flash are produced simultaneously. But flash is seen first and after few seconds thunder is heard. The reason behind it is:

Choices

Choice (4)Response

a.

Speed of sound is equal to speed of light.

b.

Speed of sound is less than speed of light

c.

Speed of sound is more than speed of light.

d.

None of the above

Question number: 1604

» Physics » Sound

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MCQ▾

Question

A pendulum oscillates times in seconds, than frequency of the oscillation is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1605

» Physics » Force and Pressure

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MCQ▾

Question

If a cube of mass put on another identical cube of edge as shown in figure, then pressure on contact surface is:

(Taking )

Two cubes of edges 10 cm

Two Cubes of Edges 10 Cm

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1606

» Physics » Force and Pressure

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MCQ▾

Question

A block of length , width and thickness , having mass placed on a table. Pressure exerted due to block is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1607

» Physics » Force and Pressure

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MCQ▾

Question

Which of the following is not unit of force?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1608

» Physics » Force and Pressure

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MCQ▾

Question

When a plastic scale is rubbed in hair, it attracts very small pieces of paper. It happens, due to:

Choices

Choice (4)Response

a.

Elastic spring force

b.

Electrostatic force

c.

Magnetic force

d.

Friction Force

Developed by: