Home › CBSE Class 12 (Science) › Physics › Dual Nature of Radiation and Matter › What is the minimum frequency below which a meta…
What is the minimum frequency below which a metal emits no photoelectrons called?
AResonant frequency
BThreshold frequency
CSaturation frequency
DStopping frequency
Answer & Solution
Correct answer: B. Threshold frequency
Below this frequency no electrons come out whatever the intensity, and its value differs from metal to metal.
Related questions
A Vienna team in 1999 showed matter-wave diffraction for which molecules?Davisson and Germer's electron experiment demonstrated what?Davisson and Germer fired slow electrons at a crystal of which metal?An electron's de Broglie wavelength is comparable to the wavelength of which radiation?Why do everyday objects show no wave behaviour?A 0.12 kg ball moves at 20 m/s. Its de Broglie wavelength is about what?Two particles have equal kinetic energy, one four times as massive. Ratio of heavy to lighA proton and an alpha particle have equal speeds. What is λ(proton) : λ(alpha)?