Wave Optics – 1 – 1

1. The velocity of light is maximum in :

(a) Diamond
(b) Water 
(c) Vacuum
(d) Glass

ANSWER

EXPLANATION

2. The speed of light in vacuum depends upon :

(a) Colour
(b) Wavelength
(c) frequency
(d) None of these

ANSWER

EXPLANATION

3. Which of the following has the longest wavelength :

(a) Blue light
(b) X-rays
(c) White light
(d) Red light

ANSWER

EXPLANATION

4. Light wave can travel through vacuum but not sound waves because :

(a) Light waves show particle nature
(b) They show wave nature
(c) They are longitudinal
(d) They are transverse

ANSWER

EXPLANATION

5. When a ray of light travels from one medium to another medium and bent towards the normal then this phenomenon is known as :

(a) Reflection
(b) Refraction
(c) Diffraction
(d) Total internal reflection 

ANSWER

EXPLANATION

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