Question

1. Which are true in the following?
(i) Red colour of sun during sunset is due to scattering of light
(ii) Scattering is same for all colours when size of scattering particles is smaller than wavelength.
(iii) Twinkling of stars is due to scattering of light
(iv)Scattering is same for all colours when size of scattering particles is greater than wavelength
Choose the correct option
(a) Only (i).
(b) (i) And (ii)
(c) (i) and (iv)
(d) (i), (ii) and (iv)​

Answer 1

Answer:

the correct answer is I and II second option

Answer 2

From the above sentences (i) and (iv) are true, the reason being :

• Scattering of light is a scientific phenomenon where the light tends to deviate due to the obstacles like dust particles and gases.
• This further creates different hues in the sky during sunrise and sunset.
• This phenomenon is then known as the Tyndall effect
• When the size of the scattering particles increase than the wavelength, it happens that all colours become a beam of white meaning the scattering is same.

Hence, the correct answer is Option C