(1)
K1 and K2 are maximum kinetic energies of photo electrons emitted when light having wavelengths λ1 and λ2 respectively incident on a metallic surface. If λ1 = 3λ2, then
Answer: K1 < (K2/3)
Answer: K1 < (K2/3)
Answer: λ/2 < λ’< λ
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Answer: 2hv/3
Answer: is the same for all metals and independent of the intensity of the radiation
Answer: Photoelectric effect
Answer: converts light into electricity
Answer: The work function of different metals is different.
Answer: The minimum energy required for the emission of electrons is called work function.
Answer: Photoelectrons are emitted if the frequency of incident light is greater than the threshold frequency.
hν = W0 + Ek.
In this equatin, Ek refers to the
Answer: In the given relation Ek stands for maximum K.E. of emitted photoelectrons.
Answer: Max. K.E. of phtoelectrons emitted is independent of intensity of incident light.
Answer: Photoelectric cell converts light energy into electric energy.
Answer: lies between zero and a finite maximum
Answer: h/λ
Answer: number of photons
Answer: energy
Answer: vary with frequency of light
Answer: None of these
(i) frequency of incident light
(ii) work function of the metal
(iii) stopping potential
(iv) intensity of incident light
Answer: (iii) only
Answer: R.A. Millikan
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