i. A ray of light gets deviated When it passes obliquely from one medium to another medium because……….. (a) the colour of light changes

Question

Rewrite the following statements by selecting the correct options:

i. A ray of light gets deviated When it passes obliquely from one medium to another medium because……….. 

(a) the colour of light changes 

(b) the frequency of light changes 

(c) the speed of light changes 

(d) the intensity of light changes

ii. The speed of light in turpentine oil is 2 × 10⁸ m/s. The absolute refractive index of turpentine oil is about……..[Speed of light in vacuum ≈ 3 × 10⁸ m/s]

(a) 1.5 

(b) 2 

(c) 1.3 

(d) 0.67

iii. LASER stands for……….. 

(a) light amplification by stimulated emission of radiation 

(b) light and sound energy radiation 

(c) light and simulated energy radiation 

(d) light amplification by sound energy radiation

iv. Out of the following……….has the highest absolute refractive index. 

(a) fused quartz 

(b) diamond 

(c) crown glass 

(d) ruby

v. The absolute refractive index………… 

(a) is expressed in dioptre 

(b) is expressed in m/s

(c) of air is about \(\frac{4}{3}\)

(d) has no unit

Answer 1

i. (c) the speed of light changes

ii. (a) 1.5

iii. (a) light amplification by stimulated emission of radiation

iv. (b) diamond

v. (d) has no unit