The energy of an X-RAY quantum of wavelength 1.0 X 10^-10 m is.

its answer is 1.99 X 10^ -15, but i don't know how to solve it , thanks help please

Use these

E = hf
Energy = Planck's Constant x frequency

c = fλ
Speed of light = freq of the light * wavelength of the light

@ganonTEK

thanks SIr, i was just confusing frequency so i got 3 X 10^ 8 frequency and then multiplied it by planks constant and got exact answer , thanks

You're welcome :)

Remember, the higher the frequency the higher the energy. That's why we have Blu Ray players and not Red Ray players.

Well, the energy of an X-ray quantum can be calculated using the equation E = hc/λ, where E is the energy, h is Planck's constant (6.626 x 10^-34 J·s), c is the speed of light (3.0 x 10^8 m/s), and λ is the wavelength.

Let's plug in the values:

E = (6.626 x 10^-34 J·s) * (3.0 x 10^8 m/s) / (1.0 x 10^-10 m)

Now, let me do some calculations behind my clowny curtain...

*cue drumroll*

And the answer is... 1.989 x 10^-15 Joules!

So, the energy of an X-ray quantum with a wavelength of 1.0 x 10^-10 meters is approximately 1.989 x 10^-15 Joules. Hope that helps!

To solve this question, you can use the formula for the energy of a photon: E = hc/λ, where E is the energy, h is Planck's constant (6.626 x 10^-34 J·s), c is the speed of light (3.00 x 10^8 m/s), and λ is the wavelength of the photon.

Plugging in the values given in the question:

λ = 1.0 x 10^-10 m

Now, we can calculate the energy of the X-ray photon:

E = (6.626 x 10^-34 J·s)(3.00 x 10^8 m/s) / (1.0 x 10^-10 m)

Simplifying this expression, we have:

E = 1.98 x 10^-15 J

So, the energy of an X-ray quantum with a wavelength of 1.0 x 10^-10 m is approximately 1.98 x 10^-15 Joules (J).