Question # 1

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

If a ray of light in glass is incident on an air surface at an angle greater than the critical angle, the ray will:

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Refract only

Reflect only

Partially refract and partially reflect

Diffract only

Specific resistance of copper is ____________ x 10^-8Ohm-meter

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1.62

1.69

5.25

2.75

The S.I unit of potential difference is:

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Ampere

Coulomb

Volt

Watt

Which instrument measures the potential difference:

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Voltmeter

Barometer

Galvanometer

Ammeter

The more negative potential of grid, the more electrons will be:

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Attracted

Repelled

Attracted as well as repelled

Neither attracted nor repelled

The current used in houses is:

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A.C.

Conventiona current

Current

D.C

J.J Thomson observed deflection of cathode rays in:

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1895

1896

1897

1998

Specific resistance of silver = ________ x 10^-sOhm-meter

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5.25

2.75

1.69

1.62

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

The unit of resistance is:

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Ω-m

Ω

V

C

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

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Ω

Ω-m

Ω-m²

Ω-m^-2

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

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