The waves emitted when a metal target is bombarded with high-energy electrons are:
- X-ray
- Infrared
- Microwaves
- Radiowave
The Correct Option is A
Approach Solution - 1
X-rays have higher frequencies and shorter wavelengths compared to the other options listed. As electromagnetic waves, they are situated in the high-frequency end of the electromagnetic spectrum, above ultraviolet light. Therefore, X-rays have more energy and higher electromagnetic frequencies compared to infrared, microwaves, and radio waves.
So, the correct option is (A): X-rays.
Approach Solution -2
When high-energy electrons are bombarded onto a metal target, they decelerate upon interaction with the target's atoms. This deceleration results in the emission of electromagnetic radiation known as X-rays.
Explanation: - The interaction between high-energy electrons and the nuclei of atoms causes the electrons to lose energy, which is emitted in the form of X-rays. - This phenomenon is the basis of X-ray production in X-ray tubes, widely used in medical and industrial imaging.
Final Answer: The waves emitted are: \[ \boxed{\text{X-rays}}. \]
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Concepts Used:
Electromagnetic waves
The waves that are produced when an electric field comes into contact with a magnetic field are known as Electromagnetic Waves or EM waves. The constitution of an oscillating magnetic field and electric fields gives rise to electromagnetic waves.
Types of Electromagnetic Waves:
Electromagnetic waves can be grouped according to the direction of disturbance in them and according to the range of their frequency. Recall that a wave transfers energy from one point to another point in space. That means there are two things going on: the disturbance that defines a wave, and the propagation of wave. In this context the waves are grouped into the following two categories:
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- Transverse waves: A wave is called a transverse wave when the disturbances in the wave are perpendicular (at right angles) to the direction of propagation of the wave.