Question

(4) The order of frequency of the seven colors of rainbow is-
(a) V=I=B=G=Y=O=R
(b) V>I>B>G>Y>O>R
(c) <B<Y<G<O<R<V
(d) none of above

(5) Which of the seven colors travels fastest in a medium ?
(a) Red
(b) Yellow
(c) Green
(d) Orange​

Answer 1

4) The frequency order is :

V>I>B>G>Y>O>R

• These are the components of white light. Now, violet has the highest frequency with lowest wavelength. Whereas , red colour has highest wavelength and lowest frequency.

5) Red travels fastest in any medium

• Velocity in any medium is inversely proportional to the refractive index of the colour.

• Red colour has least refractive index in any medium. Hence, it travels the fastest.

• Whereas, violet colour travels slowest.

$\star$ Hope It Helps.

Answer 2

Answer:

option (A)

ch 11 sample ppr 13 Q 60