B. The speed of light in vacuum to the speed of light in that medium
14.
The refractive index of water is approximately 1.33. If the speed of light in vacuum is 3 × 10⁸ m/s, the speed of light in water will be approximately:
Apparent depth, an optical phenomenon causing objects submerged in water to appear shallower than their actual depth when viewed from above, occurs due to:
A.
Refraction of light as it passes from water into air, bending away from the normal
B.
Total internal reflection of light within the water
C.
The absorption of certain wavelengths of light by water
D.
Dispersion of white light into its constituent colours
A. Refraction of light as it passes from water into air, bending away from the normal
18.
A metal coin lies at the bottom of a beaker filled with a liquid of refractive index 4/3, to a height of 6 cm. The apparent depth of the coin, as seen by an observer looking straight down from above the liquid's surface, will be approximately:
