Question

Q. Which of the following phenomenon is not due to atmospheric refraction? a)Twinkling of stars b)Tyndall effect c)Oval shape of the Sun d)Duration of the Sun’s visibility

Answer 1

Answer:

b tyndall effect

hope this helps you dear..

Answer 2

The phenomenon which is not due to atmospheric refraction is b)Tyndall effect.

• The Tyndall effect is observed due to the colloidal particles when light hits the colloidal particles then it is scattered and a beam is seen which is known as the Tyndall effect.
• Refraction is the bending of rays of light when it travels from one medium to another medium.
• Twinkling of stars appears because starlight enters from outer space to earth's atmosphere. so, it is due to refraction.
• Sun appears slightly oval due to refraction.
• As sunlight passes from atmospheric layers it suffers refraction due to which the sun appears to rise 2 minutes early and sunset 2 minutes late.

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