Practice portal › Electromagnetic Waves › The Electromagnetic Spectrum

Which one of the following electromagnetic wave is of minimum wavelength?

Asked in GSEB Board March 2022 · Order of the bands

Answer: (3) Gamma rays

Step-by-step solution

Idea: along the spectrum the wavelength falls as the process producing the radiation grows more energetic.

Of the four, infrared is the longest, then ultraviolet, then X-rays at about 10⁻¹⁰ m.

γ-rays come out of nuclear transitions, the most energetic process here, so their wavelength is the smallest, about 10⁻¹² m and below.

So gamma rays have the minimum wavelength.

Why the other options are wrong

More The Electromagnetic Spectrum questionsAll The Electromagnetic Spectrum questions →

Reading this solution needs no sign-in. You only sign in to practise against the clock and keep your progress.

Practise this with a timer