Question

The phenomena in which certain metals emit electrons when exposed to high-frequency light is known as?

Options

A
Photoelectric Effect
B
Compton’s Effect
C
Henry's Effect
D
Principle of Relativity
E
Coulomb's Law

Explanation

When a metal surface is exposed to a monochromatic electromagnetic wave of sufficiently short wavelength (or equivalently, above a threshold frequency), the incident radiation is absorbed and the exposed surface emits electrons. This phenomenon is known as the photoelectric effect.

The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material.

The Compton effect is the decrease in energy (increase in wavelength) of an X-ray or gamma-ray photon when it interacts with matter

The principle of relativity states that there is no physical way to differentiate between a body moving at a constant speed and an immobile body

According to Coulomb's law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

Hence the correct option is PHOTOELECTRIC EFFECT.

Compton's effect, also known as Compton scattering, is a phenomenon in which X-ray or gamma-ray photons undergo a scattering interaction with electrons. This effect demonstrates that photons can behave as particles and exhibit characteristics of both particles and waves. It is not directly related to the emission of electrons by metals due to high-frequency light.

There is no widely recognized scientific phenomenon known as "Henry's Effect." It does not pertain to the emission of electrons by metals due to high-frequency light.

The principle of relativity is a fundamental concept in physics introduced by Albert Einstein. It states that the laws of physics are the same in all inertial reference frames. It does not directly relate to the emission of electrons by metals due to high-frequency light.

Coulomb's Law describes the electrostatic interaction between charged particles. It states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. While Coulomb's Law is an important principle in electromagnetism, it does not explain the emission of electrons by metals due to high-frequency light.