MHT CET · Physics · Dual Nature of Matter
Light of wavelength \(\lambda\) which is less than threshold wavelength is incident on a photosensitive material. If incident wavelength is decreased so that emitted photoelectrons are moving with same velocity then stopping potential will
- A increase
- B decrease
- C be zero
- D become exactly half
Answer & Solution
Correct Answer
(A) increase
Step-by-step Solution
Detailed explanation
According to photoelectric equation
where
If E is constant
If we decrease the wavelength , then stopping potential will increase such that constant
where
If E is constant
If we decrease the wavelength , then stopping potential will increase such that constant
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