Question

36. The colour of head lights suitable for vehicle in foggy weather is
(a) yellow

(b) red

(c) green

(d) violet

37. The bluish colour of water in deep sea is due to
(a) less the presence of algae and other plants found in water

(b) reflection of the sky in water

(c) scattering of light

(d) absorption of light by the sea

Answer 1

a) yellow

(c) scattering of light

Explanation:

• Yellow light has the highest wavelength and also high visibility because yellow light is less scattered by fog particles.
• the bluish color of water in the deep sea is due to the scattering of light. The blue color has a small wavelength and hence a higher frequency.
• The blue light is more scattered than the red and the light reaching our eyes has a blue color.

Answer 2

Answer:

(a) The yellow colour of headlights suitable for a vehicle in foggy weather.

(c) The bluish colour of water in the deep sea is due to the scattering of light

Explanation:

• Yellow has the longest wavelength and is less scattered by fog, therefore visibility for vehicles will improve as a result of this light. As a result, we utilize yellow lights in vehicles to indicate fog.
• When we stare deep into the sea, away from the sun, the blue light is more distributed than the red light. Because the light that reaches our eyes contains more violet and blue, the deepwater appears blue.