MCQ
Which theory of light is wave theory or particle theory?
- ADynamic physics
- BStatic physics
- ✓Quantum mechanics
- Dde $–$ Broglie hypothesis
The essential theory of light was further evolved from electromagnetics into quantum mechanics. Einstein believed light is a particle, i.e. a photon and that the flow of these particles $($photons$)$ is a wave.
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$(a)$ Maximum $KE$ associated with photoelectrons from the surface of any metal is $0.3\ eV$
$(b)$ No photoelectrons are emitted from the surface of $Ni$
$(c)$ If the frequency of the source of radiation is doubled then $KE$ of photoelectrons is also doubled
$(d)$ Photoelectrons will be emitted from the surfaces of all the three metals if the wavelength of the incident radiation is less than $200\ nm$
Correct statements are