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Atmospheric Refraction

Do the colour...

Question

Do the colours of white light travel at same speed through the air?

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Solution

In empty space, all colors travel at thesame speed called c. Light of different wavelengths, or colours, travels at different speeds when they travel through any medium other than vacuum.

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Q. Question 8
Which of the following statements is correct regarding the propagation of light of different colours of white light in air?

(a) Red light moves fastest
(b) Blue light moves faster than green light
(c) All the colours of the white light move with the same speed
(d) Yellow light moves with the mean speed as that of the red and the violet light

Q. State whether true or false :

Lights of all colour travel at the same speed in vacuum.

Q. Indicate the colour of light which travels through glass with the minimum speed :

Statement 1: When white light ray passes through a prism, it disperses into seven different colours, and this phenomenon is called dispersion.

Statement 2: In a refracting media, lights of different colour travel at different speed.

Q. X-ray and visible light travel at the same speed in vacuum. Do they travel at the same speed in glass?

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