81)The delicate membrane having enormous number of light sensitive cells is:
82)The amount of light entering the eye is regulated and controlled by the
83)The minimum distance at which the objects can be seen most distinctly without strain is called
84)A person can see distant objects clearly but cannot see nearby objects distinctly. The person is suffering from:
85)The defect myopia can be corrected by using a:
86)The band of the coloured components of a light beam is called its
87)The formation of a rainbow in the sky involves:
88)Advance sunrise and delayed sunset are due to
89)The blue colour of clear sky is due to
90)If the speed of light in glass is 2 × 108m/s and the speed of light in air is 3×108m/s, the refractive index of glass with respect to air is:
C) 1.5
Explanation:Refractive index
→ 1.5
View Answer
C) 1.5
Explanation:Refractive index
→ 1.5
Your Score: 0 / 0