Question

58
3. diamagnetic
50. Wavelength of a radiation is 3000A. Its

frequency is
1.0.5 x 1013 Hz
2. 1x 1013 Hz
3.0.5 x 1015 HZ
4.1 x 1015 Hz​

Answer 1

Freq = c/wavelength

So, Freq = (3 * 10^8) / (3000 * 10^-10)

= (3 * 10^8) / (3 * 10^-7)

= (10^15) Hz