Tax and Tips

When a beam of white light falls on a glass prism, the colour of light which will deviate least is:

• Violet

• Red

• Green

• Blue

The star appear shifted from their actual position due to the phenomenon of:

• Diffraction of light

• Scattering of light

• Refraction of light

• Reflection of light

Which of the following figures correctly represents the passage of white light through prism?

• a

• b and c

• c

• d

Which of the following graph represents the correct variation of angle of incidence (i) and angle of deviation (δ)?

• a

• b

• c

• d

In which of the following cases will no dispersion take place when sunlight passes through it?

• a

• b

• c

• d

A: Astigmatism usually is caused by an irregularly shaped cornea.

B: Rainbow is the natural phenomenon in which dispersion takes place.

• Both 'A' and 'B' are true statements

• Both 'A' and 'B' are false statements.

• ‘A' is true while 'B' is false.

• ‘A' is false while 'B' is true

The splitting of white light into different colours on passing through a prism is called

• reflection

• refraction

• dispersion

• deviation

At noon, the Sun appears white as

• blue colour is scattered the most

• red colour is scattered the most

• light is least scattered

• all the colours of the white light are scattered away

Twinkling of stars is due to

• reflection of light by clouds

• scattering of light by dust particles

• dispersion of light by water drops

• atmospheric refraction of starlight

When white light enters a glass prism from air, the angle of deviation is least for

• blue light

• yellow light

• violet light

• red light