Question

An electromagnetic wave has a wavelength of 1.5x10⁻⁵ m. What is its frequency?

Answer 1

The frequency is =2⋅10 18 H z

Step-by-step explanation:

Apply the equation

Frequency

×

Wavelength

=

Speed

f

×

λ

=

c

The wavelength is

λ

=

1.5

⋅

10

−

10

m

The speed is

c

=

3

⋅

10

8

m

s

−

1

The frequency is

f

=

c

λ

=

3

⋅

10

8

1.5

⋅

10

−

10

=

2

⋅

10

18

H

zApply the equation

Frequency

×

Wavelength

=

Speed

f

×

λ

=

c

The wavelength is

λ

=

1.5

⋅

10

−

10

m

The speed is

c

=

3

⋅

10

8

m

s

−

1

The frequency is

f

=

c

λ

=

3

⋅

10

8

1.5

⋅

10

−

10

=

2

⋅

10

18

H

z

Answer 2

Answer:2x10^13Hz

Expllanation:In the space, c=3x10^8m/s
c=λf
f=c/λ=(3x10^8m/s)/(1.5x10^(-5)m)=2x10^13Hz