Question # 1

To see from submarine and the ship at the surface of water, we use:

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Telescope

Microscope

Periscope

Prism

When a current carrying conductor is placed in magnetic field at right angle to it. The direction of force acting upon it is:

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The same as direction of field

Opposite the direction of field

Makes an angle of 45^owith the current

At right angle to both the field and the current.

The number of lines of force in a magnetic field depends upon.

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Shape of coil

Sixe of coil

Magnet

Strength of field

The minimum value of angle of deviation is called:

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Minimum angle

Incident angle

Angle of minimum deviation

None of these

According to coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases:

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Increases

Decreases

Remains unchanged

Cannot be determined

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

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Negative

Positive

High positive

Zero positive

Transformer works on _______ supply.

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A.C

D.C

Battery

Both A and B

Number of poles in a magnet is:

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One

Two

Three

Unlimited

Which part of a D.C. motor reverses the direction of current through the coil every half-cycle.

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The armature

The commutator

The burshes

The slip rings

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10th Class Physics Chapter 15 Electromagnetism English Medium KPK Boards Online Mcqs MCQs With Answers

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