Question

Which of the following statements is wrong?
1) Rayleigh's law of scattering can be applied only when the size of the scatterer is very much less
than the wavelength of light.
2) Mass density of an optically denser medium may be less than that of an optically rarer medium.
3) The apparent flattening of the sun at sunset and sunrise is due to the refraction of light.
4) Refractive index of a medium is same for all colours of light
0 1
02
3​

Answer 1

Answer:

which of the following statement is wrong

Answer 2

The Refractive index of a medium is not the same for all colors of light.

Refractive Index is defined as -

The ratio of the speed of light in a vacuum to its speed in a specific medium.

Refractive index formula -

$n=\frac{c}{v} ,$  where c = speed of light in vacuum and v = velocity of light in a medium

• The Refractive Index of a medium is not the same for all colors of light as the refractive index decreases with an increase in wavelength of light.
• Different colors of light have a different wavelength which in turn affects the refractive index of the medium.

Henceforth, statement 4 is incorrect.

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