Question # 1

What type of graph is in between V and I?

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Curved

Parabola

Straight line

None of these

The distance between principal focus and pole of mirror is called:

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Principal focus

Focal length

Aperture

Image

The diameter of spherical mirror is called:

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Curvature

Aperture

Sphere

Both a and b

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

According to Ohm's law V =________

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I²R

IR²

IR

I/R

Which instrument is used to detect current?

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Galvanometer

Voltmeter

Ammeter

Electroscope

AND operation is represented by:

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Dot (.)

Addition (+)

Division (÷)

Minus (-)

In OR operation inputs are connected as:

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Series

Parallel

Both series or parallel

None of these

An electric current in conductors is due to the flow of:

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Positive ions

Negtive ions

Positive charge

free electron

The unit of resistance is:

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Ω-m

Ω

V

C

Half of radius of curvature is called:

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Focal length

Principal focus

Axis

Aperture

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

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1.62

1.69

5.25

2.75

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

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