Which of the following are electromagnetic waves?

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RRB NTPC - 2019

General Science

Which of the following are electromagnetic waves?

This question was previously asked in

RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)

X-rays

Beta rays

Alpha rays

Audible waves

The correct answer is

X-rays

Electromagnetic Waves Identification

Electromagnetic (EM) waves are a type of radiation made up of oscillating electric and magnetic fields. They travel at the speed of light and do not require a medium.

Analyzing Wave Types

X-rays: These are a form of high-energy electromagnetic radiation, part of the EM spectrum.
Beta rays: These consist of fast-moving electrons or positrons. They are particle radiation, not EM waves.
Alpha rays: These are composed of alpha particles (helium nuclei). They are particle radiation, not EM waves.
Audible waves: These are sound waves, which are mechanical waves requiring a medium like air or water to propagate.

Identifying EM Waves

From the options, only X-rays fit the definition of electromagnetic waves.

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