Answer is (A)
According to photoelectric equation,
where
If is constant then
If we decrease the wavelength , then stopping potential will increase such that constant.
Light of wavelength ‘ ‘ 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
A) increase
B) decrease
C) be zero
D) become exactly half
Light of wavelength ‘ ‘ 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
A) increase
B) decrease
C) be zero
D) become exactly half