General Knowledge Quiz 40

This is a timed quiz. You will be given 120 seconds to answer all questions. Are you ready?

120

Which one among the following is not produced by sound waves in air?

Polarisation

Reflection

Diffraction

None

Correct! Wrong!

Ultrasonic waves are those sound waves having frequency?

More than 20 kilohertz

Between 1000 hertz and 20000 hertz

Between 20 hertz and 1000 hertz

none

Correct! Wrong!

Light travels slower in glass than in air because:

Density of glass is greater than that of air

Refractive index of air is greater than that of glass

Refractive index of air is less than that of glass

None

Correct! Wrong!

Bats can ascertain distances, directions, nature and size of the obstacles at night. This is possible by reflection of the emitted ?

Supersonic waves from the distant objects

Ultrasonic waves from the bat

Supersonic waves from the bat

none

Correct! Wrong!

The audible frequency range of a human ear is:

200 hertz to 2000 hertz

20 hertz to 20000 hertz

20 hertz to 200 hertz

None of these

Correct! Wrong!

‘Newton’s disc’ when rotated at a great speed appears ?

Green

Orange

White

None

Correct! Wrong!

In vacuum, the speed of light:

Depends on frequency

Depends on wavelength

Depends on intensity

Neither depends on its wavelength, frequency nor intensity

Correct! Wrong!

Light travels in optical fibre irrespective of its shape because it is a device by which signals can be transferred from one location to another. It is based on the phenomenon of

Total internal reflection of light

Refraction

Reflection

None

Correct! Wrong!

General Knowledge Quiz 40

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General Knowledge Quiz 40

Which one among the following is not produced by sound waves in air?

Ultrasonic waves are those sound waves having frequency?

Light travels slower in glass than in air because:

Bats can ascertain distances, directions, nature and size of the obstacles at night. This is possible by reflection of the emitted ?

The audible frequency range of a human ear is:

‘Newton’s disc’ when rotated at a great speed appears ?

In vacuum, the speed of light:

Light travels in optical fibre irrespective of its shape because it is a device by which signals can be transferred from one location to another. It is based on the phenomenon of

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Purchased - Phosphorescent powder Science Kit

General Knowledge Quiz 40

Which one among the following is not produced by sound waves in air?

Ultrasonic waves are those sound waves having frequency?

Light travels slower in glass than in air because:

Bats can ascertain distances, directions, nature and size of the obstacles at night. This is possible by reflection of the emitted ?

The audible frequency range of a human ear is:

‘Newton’s disc’ when rotated at a great speed appears ?

In vacuum, the speed of light:

Light travels in optical fibre irrespective of its shape because it is a device by which signals can be transferred from one location to another. It is based on the phenomenon of

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General Knowledge Quiz 42

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Purchased - Phosphorescent powder Science Kit