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Physics 10th Class English Medium Unit 5 Online Test MCQs With Answers

Question # 1

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

Choose an answer

Its direction

Its speed

Its frequency

Its wavelength

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Question # 2

The mirror whose outer surface is reflecting is called:

Choose an answer

Concave mirror

Convex mirror

Mirror

Lens

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Question # 3

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power.

Choose an answer

remains unchanged

halves

doubles

four time

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Question # 4

The equivalent resistance in parallel combination is:

Choose an answer

R_c=R₁+R₂+R₃ +.................+R_n

R_c=1/R₁+1/R₂+1/R₃+.................+1/R_n

a and b

None of these

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Question # 5

Image formed on a camera is:

Choose an answer

Real, inverted, and diminished

Virtual, upright and diminished

Virtual, upright and magnified

Real, inverted and magnified

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Question # 6

The current which changes its direction is called:

Choose an answer

Current

A.C.

Conventional current

D.C.

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Question # 7

The unit of potential difference is:

Choose an answer

Volt

Coulomb

Ampere

Joule

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Question # 8

What should household appliances be connected in parallel with the voltage source?

Choose an answer

to increase the resistance of the circuit

to decrease the resistance of the circuit

to provide each appliance the same voltage as the power source

to provide each appliance the same current as the power source

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Question # 9

Electron gun has an electrode called for controlling the flow of electrons in the beam:

Choose an answer

Plate

Grid

Screen

Filament

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