Question # 1

If focal length of a lens is 1m, then its power will be:

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1 D

0.5 D

1.5 D

1 D

At mean position kinetic energy of the ball is:

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Minimum

Zero

Maximum

10 J

In fixed capacitor dielectric used is:

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Paper

Metal

Mica

Paper & mica

In D.C.motor split rings are made of:

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Steel

Carbon

Copper

Iron

The voltage is decreased by:

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Step-up transformer

Step-down transformer

A.C. generator

D.C. Motor

the unit of frequency is:

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hertz

vibration per second

cycle per second

all a, b and c

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

Two switches attached in series work on which operation?

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AND operation

OR operation

NOT operation

NOR operation

Which particles are nucleons?

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Electrons and protons

Protons and neutrons

Electrons and neutrons

Electrons and positrons

Which of the following quantities is not change during refraction of light:

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Its direction

Its speed

Its frequency

Its wavelength

Which element is used to locate the ulcer in brain?

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Iodine-131

Phosphorus-32

Carbon-14

Potassium-40

Power of lens is:

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q/p

1/q

1/p

1/f

If the distance between the charged bodies is much greater as compared to their sizes then the bodies are considered is:

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Positive charge

Negative charge

Point charge

Zero charge

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10th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

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