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Question: The frequency of an electromagnetic radiation is\(2 \times 10^{6}Hz\). What is its wavelength in met...

The frequency of an electromagnetic radiation is2×106Hz2 \times 10^{6}Hz. What is its wavelength in metres

(Velocity of light =3×108ms−1= 3 \times 10^{8}ms^{- 1})

A

6.0×10146.0 \times 10^{14}

B

1.5×1041.5 \times 10^{4}

C

1.5×1021.5 \times 10^{2}

D

0.66×10−20.66 \times 10^{- 2}

Answer

1.5×1021.5 \times 10^{2}

Explanation

Solution

When c=ν×λc = \nu \times \lambda than λ=cν=3×1082×106=1.5×102m\lambda = \frac{c}{\nu} = \frac{3 \times 10^{8}}{2 \times 10^{6}} = 1.5 \times 10^{2}m