Problem 361. Energy of a photon

Created by AMITAVA BISWAS

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Given the frequency F of a photon in giga hertz.
Find energy E of this photon in giga electron volts.
Assume h, Planck's constant is about 4 femto electron-volt-second.
To maximize benefits, it may help not looking at the Test Suite before trying any solution!
For more info: <https://en.wikipedia.org/wiki/Planck_constant>

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Last Solution submitted on Jun 16, 2025

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Gergely Patay on 16 Oct 2017

The test suite is just silly/broken.

Matthew Eicholtz on 16 Oct 2017

I agree. I think the test suite needs to be modified.

Alfonso Nieto-Castanon on 16 Oct 2017

it looks fine to me (it sets some bounds without giving away the actual value, perhaps I am missing something?)

Mohamed Atyya on 30 Oct 2017

good

Mahadev Krishnan on 20 Dec 2017

Improve the test suite..

Ameer Hamza on 2 Jan 2018

The top solutions are not even solving the actual problem.

Jafar Mortadha on 17 Jun 2018

Test suite is very badly made. And the problem is pointless. I hope people who post problems think a little a bit before creating a new problem.

akihisa yorozu on 22 Sep 2021

Photon energy calculation is well known equation to the person who learned physics. This problem using not "J" but "eV" as the unit. Take care!

GeeTwo on 24 Dec 2022

E=hf. The test cases are just wrong.

Cinzia on 19 Sep 2023

The test case should be updatet, it does not account for numerical differences. Also why not use a more accurate value for the Planck constant? As it is now one hase to reverse engineer the Planck constant from the test cases and then use that one. And then it even fails the test case...

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Problem 361. Energy of a photon

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Problem 361. Energy of a photon

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