Question # 1

To hear echoes, the minimum distance of the obstacle from source of sound should be:

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10m

15m

17m

20m

1 Pico Farad is equal to:

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10^-9F

10^-12F

10¹²F

10^-6F

In the presence of a charged body, an insulated conductor develops positive charge at one end and negative charge at the other end, this i- called:

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Electrostatics

Electrostatic induction

Magnetism

Electromagnetic induction

Two charged spheres are separated by 2 mm. Which of the following would produced the greatest attractive force?

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+1 q and +4q

-1 q and -4q

+2 q and +2q

+2 q and -2q

A positive and negative charges are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them is:

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4 times smaller than before

4 times larger than before

8 times larger than before

16 times larger than before.

If we double the distance between two charges, what will be the change in the force between them?

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Half

Double

One fourth

Four times

Electric potential is a quantity:

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Scalar

Vector

Base

All

Bats can hear sound of frequency up to:

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100,000Hz

25000Hz

120, 000Hz

1000Hz

SI unit of electric intensity is:

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NC

NC^-1

NC^-2

NC^-3

The brain of any computer system is:

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Monitor

Memory

CPU

Control unit

Two uncharged objects A and B are rubbed against each other. When object B is placed near a negatively charged object C, the two objects repel each other. Which of these statements is true about object A.

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Remains uncharged

Becomes positively charged

Becomes negatively charged

Unpredicatable

Electric field lines of force were first introduced by:

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Ampere

Farady

Fleming

Coulomb

The S.I unit of electric potential is:

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Watt

Joule

Coulomb

Volt

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Physics 10th Class English Medium Unit 4 Online Test MCQs With Answers

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