Question

the wave length of light having frequency 30× 10^6 sec^-1 is ...... m​

Answer 1

Answer:

please mark as Brinelist answer

Answer 2

Answer:

f×λ=c

Where, f= frequency

λ= wavelength

c= speed of light in vacuum

λ=

1.0×10

6

s

−1

3×10

8

m/s

=3×10

2

m=3×10

4

cm

Therefore, the correct option is A.