Question # 1

The cathode ray oscilloscope consists of main parts:

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Two

Three

Four

Five

The step-up transformer

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Increases the input current

Increase the input voltage

Has more turns in the primary

Has less turns in hte secondary coil

Who discovered Electromagnetic induction?

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Michael Faraday

Flemiing

Ohm

Coulomb

In totally reflecting prism one angle is of:

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45°

90°

180°

120°

According to Fleming's left hand rule the direction of magnetic field is indicated by:

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Thumb

Forefinger

Middle finger

Right hand rule

When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90° is called:

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Angle of incidence

Critical angle

Angle of refraction

Angle of deviation

Iron core is used in tranformer to:

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Enhance the flux

Decrease the flux

Keep flux the same

botha a and b

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

Totally reflecting prism is used in:

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Periscope

Binoculars

Periscope and binocular

Telescope

The ray of light after reflection from concave mirror passes through:

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Centre

Principal focus

Pole

Radius

The voltage is decreased by:

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Step-up transformer

Step-down transformer

A.C. generator

D.C. Motor

In D.C.motor split rings are made of:

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Steel

Carbon

Copper

Iron

Spherical mirrors are used in:

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Medical

Search light

Microscope

All of these

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

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