Question # 1

Who discovered Electromagnetic induction?

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Michael Faraday

Flemiing

Ohm

Coulomb

Which device has two coils, primary and secondary?

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D.C. Motor

Transformer

A.C. genrator

a and b

The direction of induced e.m.f. in a circuit is in accordance with conservation of.

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Mass

Charge

Momentum

Energy

If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire.

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Increases

Decreases

Remains the same

Will be zero

In C.R.O grid is always connected with potential:

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Negative

Positive

High positive

Zero positive

Totally reflecting prism is used in:

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Periscope

Binoculars

Periscope and binocular

Telescope

The shape of magnetic lines of force in case of a straight current carrying conductor is:

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Eliptical

Trangular

Rectangular

Circular

A converging lens becomes a magnifying glass when an object is placed:

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Outside of focal length

Inside the focal length

Equal of focal length

At double of focal length

In NOT gate number of input terminals is/are:

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1

2

3

4

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Physics 10th Class English Medium Unit 6 Online Test MCQs With Answers

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