What is the frequency of light that has a
wavelength of 244 pm?

f =  0.0123 × 10²⁰ s⁻¹

Explanation:

Given data:

Wavelength = 244 pm

Frequency = ?

Solution:

First of all we will convert the pm into meter.

244 pm. 1 m / 10¹² pm =  244× 10⁻¹² m

Formula:

f = c/ λ

f = frequency

c = speed of light

λ = wavelength

Now we will put the values in formula.

f = c/ λ

f = 3 × 10⁸ m.s⁻¹ / 244× 10⁻¹² m

f =  0.0123 × 10²⁰ s⁻¹

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.