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JIPMER 2008
Exam
JIPMER
Year
2008
Subject
Physics
Chapter
Dual Nature of Matter

JIPMER 2008 · Physics · Dual Nature of Matter

In photoelectric effect, the electrons are ejected from metals if...

In photoelectric effect, the electrons are ejected from metals if the incident light has a certain minimum

Options

  1. Awavelength
  2. Bfrequency
  3. Camplitude
  4. Dangle of incidence

Correct answer

B. frequency

Step-by-step solution

In photoelectric effect for a given photosensitive material, there exists a certain minimum cut-off frequency, called the threshold frequency, below which no emission of photoelectrons takes place no matter how intense the light is.
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