Question # 1

The unit of (ρ) in formula R=ρ.L/a is______________.

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Ω

Ω-m

Ω-m²

Ω-m^-2

The unit of power is _________

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Volt

Watt

Joule

Coulomb

The resistance of conductors is due to:

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Protons

Fixed atoms

Molecules

Neutrons

The resistance of voltmeter is:

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zero

low

Very high

10Ω

The diameter of spherical mirror is called:

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Curvature

Aperture

Sphere

Both a and b

Which instrument measures the potential difference:

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Voltmeter

Barometer

Galvanometer

Ammeter

The unit of resistance is:

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Ω-m

Ω

V

C

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2Ω

4Ω

8Ω

12Ω

Electric potential and e.m.f.

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are the same terms

are the different terms

have different units

both b and c

Mathematical form of Ohm's law is:

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V = IR

V = I2R

V = Qt

V = IR2

The point through which rays of light pass after reflection from concave mirror is called principal:

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Focus

Circle

Axis

Radius

That period in which voltage repeats its value in equal intervals is called:

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cycle

Time period

Frequency

Amplitude

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

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