Question

The violet to red coloured radiations, making up the visible light have wavelength range 400 nm to 750 nm. Calculate the corresponding range of frequencies.​

Answer 1

Explanation:

Frequencyofvioletlight,

v=

λ

c

=

400×10

−9

m

3.00×10

8

ms

−1

=7.50×10

14

Hz

Frequencyofredlight,

v=

λ

c

=

680×10

−9

m

3.00×10

8

ms

−1

=4.41×10

14

Hz

Answer 2

Frequencyofvioletlight,

v=

λ

c

=

400×10

−9

m

3.00×10

8

ms

−1

=7.50×10

14

Hz

Frequencyofredlight,

v=

λ

c

=

680×10

−9

m

3.00×10

8

ms

−1

=4.41×10

14

Hz