Question

If wave number of an electromagnetic radiation is 10^8 cm^-1 then the frequency of the radiation will be (speed of light = 3 x 10^8 ms¯¹)
3×10^16 Hz
3×10^18 Hz
3×10^20 Hz
3×10^17 Hz​

Answer 1

Answer:

3×10^16

Explanation:

wave number=10^8×10^-2m-1

wave number =1/wavelength

as we know

speed=frequency×wavelength

frequency=speed/wavelength

frequency=speed×wave number

frequency=3×10^8×10^8×10^-2

frequency=3×10^16

Answer 2

Answer: The answer to this question is-

Given- wave number, 1/∧ = $10^{8}$ $cm^{-1$

           speed of light, c = 3×$10^{8}$ $ms^{-1}$

      We know that , c = f ∧

                             ⇒ f = c/∧

                             ⇒ f = 3×$10^{8}$ × $10^{8}$

                             ⇒ f = 3×$10^{16}$ Hz

Explanation:

Frequency can be defined as the number of oscillations of a wave per unit time being, measured in hertz(Hz). The frequency is directly proportional to pitch. Humans can hear sounds with frequencies ranging between 20 – 20000 Hz. Sounds with frequencies over the human ears range are known as ultrasound, and sounds with frequencies less than the audible range are known as infrasound.

To know more click on the link below-

https://brainly.in/question/14612030

https://brainly.in/question/39348621

#SPJ5