Question:
The phenomenon of removal of electrons from a metal surface when it is made to strike with radiation of suitable frequency is called:
The phenomenon of removal of electrons from a metal surface when it is made to strike with radiation of suitable frequency is called:
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Photoelectric effect occurs only when frequency of incident light is above threshold frequency.
Updated On: Jun 19, 2026
- Compton effect
- Stark effect
- Zeeman effect
- Photoelectric effect
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The Correct Option is D
Solution and Explanation
Step 1: Understand the phenomenon.
When electromagnetic radiation of suitable frequency strikes a metal surface and ejects electrons, the process is defined as emission of photoelectrons.
Step 2: Identify the correct name.
This emission of electrons due to incident light is called the photoelectric effect.
Step 3: Eliminate incorrect options.
Compton effect: scattering of X-rays by electrons
Stark effect: splitting of spectral lines in electric field
Zeeman effect: splitting in magnetic field
Step 4: Physical interpretation.
Only photoelectric effect involves electron emission from metal surface due to light.
Step 5: Final conclusion.
Hence, correct option is photoelectric effect.
Step 6: Final answer.
\[ \boxed{\text{Photoelectric effect}} \]
When electromagnetic radiation of suitable frequency strikes a metal surface and ejects electrons, the process is defined as emission of photoelectrons.
Step 2: Identify the correct name.
This emission of electrons due to incident light is called the photoelectric effect.
Step 3: Eliminate incorrect options.
Compton effect: scattering of X-rays by electrons
Stark effect: splitting of spectral lines in electric field
Zeeman effect: splitting in magnetic field
Step 4: Physical interpretation.
Only photoelectric effect involves electron emission from metal surface due to light.
Step 5: Final conclusion.
Hence, correct option is photoelectric effect.
Step 6: Final answer.
\[ \boxed{\text{Photoelectric effect}} \]
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