CBSE Class 12-science Answered
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Asked by jain.pradeep | 01 May, 2019, 10:52: PM
Expert Answer
(11) Total energy is constant. Hence graph-(D) represents the total energy of oscillating mass
(12) current is directly proportional to voltage across resistance. zero voltage gives zero current.
Hence graph-A represents the current as a function of voltage.
(13) Maximum kinetic energy of photo electron = hν - φ , where φ is the photo-electric workfunction of material,
ν is the incident frequency of radiation and h is plancks constant. For lower frequency, there is a threshold value due to workfunction.
For frequency above threshold value, kinetic energy is directly proportional to incident energy of photon,
hence proportional to frequency of incident radiataion.
Hence graph-B represents the maximum kinetic energy of electron as function of frequency of incident radiation
Answered by Thiyagarajan K | 02 May, 2019, 12:41: PM
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