Alight wave travels through space at a speed of 3 x 108 m/s. if the wavelength of some light wave is 2 x10-3 m, what is the frequency of the wave?

6.67 x 10-12 hz

1.5 x1011 hz

6 x105 hz

2 x 10-3 hz

Here is your answer

b)

REASON :

We know that

Velocity= Frequency× Wavelength

So,

Frequency= Velocity/wavelength

Here,

V= 3× 10^8 m/s

Wavelength= 2×10^-3 m

Hence,

Frequency= 3×10^8/2×10^-3

= 3/2 × 10^11

= 1.5× 10^11 Hz

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