Metals A and B have threshold wavelengths and respectively
PHYSICS · Single correct · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter
Problem
Metals A and B have threshold wavelengths 620nm and 450nm respectively. Monochromatic light of wavelength 500nm is incident on both. Which one of the following is correct?
(a) Only B emits photoelectrons
(b) Neither A nor B emits photoelectrons
(c) Only A emits photoelectrons
(d) Both A and B emit photoelectrons