What is the frequency of radiation whose wavelength is 2.40 x 10^-5 cm

The frequency of radiation is 1.25 × 10¹⁵ Hz.

Explanation:

Given data:

Wavelength = 2.40 x 10^-5 cm or 2.4 x 10^-7 m

frequency = ?

Solution:

Formula:

f = c / λ

f = frequency

c = speed of light    (3×10⁸ m/s)

λ = Wavelength

Now we will put the values in formula

f = c / λ

f = 3×10⁸ m/s /2.40 x 10⁻⁷m

f = 1.25 × 10¹⁵ s⁻¹

  or

f = 1.25 × 10¹⁵ Hz    (s⁻¹ = Hz)

The radiation has a frequency of 1.25 1\s with travelling in the light-medium.

Explanation:

No medium for the travel of light is given, thus it is considered that the radiation is travelling in the air medium with the speed of light. The frequency of the radiation in light-medium can be calculated as:

Frequency =

Frequency =

Frequency of radiation = 1.25 1/s

The radiation is emitted in the light-medium thus travels with the speed of light. Since the wavelength of the radiation is known it is calculated for the frequency with the given formula.

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answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.