Question # 1

How does light travel in air.

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In a circle

Along curved path

Along a straight line

In dispersed path

Moon is

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Luminous object

Ligh emitting object

Non-luminous object

Opaque object

Tissue paper allows it to pass through

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Complete light

Some part of light

Special light

Inadequste light

Speed of sound is maximum in

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A metal wire

Air

Water

Vacuum

Speed oflight travels is one second.

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200,000 km

300,000 km

400,000 km

500,000 km

What one of the followig object emit its light.

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Wood

Brick

Sun

Soil

Sound is produced by

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Vibrating object

Transparent object

Opaque object

Translucent object

Which object reflect maximum light.

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White paper

Coloured paper

Mirror

Brick wall

Light travels.

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In straight line

In the form of wave

From time to time

In the form of zig zag

Which things are not transparent objects.

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wood

Metal

Stone

All of these

The speed of sound through air.

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340 meter per secod

1500 meter per second

5000 meter per second

500 meter per second

____________ light is the reiurs of light when it hits as opaque surface.

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Refraction

Reflection

Dis persion

Echo

Which of the following object in luminous.

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Book

Candle

Bulb

Sun

The light reflected from the moon resches to earth.

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2.5 sec

3.5 sec

1.5 sec

0.5 sec

The light from the sun reaches on the earth

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5 min

8 min

10 min

15 min

The speed of sound through Iron.

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340 meter per second

1500 meter per second

5000 meter per second

500 meter per second

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