Which of the following is the frequency of an electromagnetic wave with wavelength 1 m? (Speed of light, c = $3 x 10^{8}$ m/s)

3 x 10^{8}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

3 x 10^{7}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3 x 10^{6}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3 x 10^{5}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $3 x 10^{8}$ Hz
For an electromagnetic wave, the product of wavelength ( $λ$ ) and frequency ( $ν$ ) is equal to the speed of light (c).
$λ$ x $ν$ = c
where c= $3 x 10^{8}$ m/s
Here, $λ$ = 1 m
$⟹$ $ν$ = $\frac{3 x 10^{8}}{1}$ = $3 x 10^{8}$ Hz

Suggest Corrections

Similar questions

10 \circ A

8.2 \times 10^{6} H z

E x = 0, E y = 0,

E_{Z} = 2.5 ((2 π \times 10^{6}) t - (π \times 10^{- 2}) x]

E_{x} = 0

E_{y} = 2.5 \frac{N}{C} cos [(2 π \times 10^{6} rad/s) t - (π \times 10^{- 2} rad/m) x];

E_{z} = 0

100 nm

3 \times 10^{8} m/s

Join BYJU'S Learning Program