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QAIPMT-2011-Ph-1914: NEET 2011 Physics - Class 12 AIPMT-2011-Ph-1914 Solution: The potential energy of a system increases if work is done upon …
The potential energy of a system increases if work is done upon the system by a nonconservative force by the system against a conservative force. by the system against a nonconservative force. upon the system by a conservative force.
Multiple Choice Options
- A power
- B wavelength
- C intensity
- D frequency
Step-by-Step Verified Solution
According to Einstein�s photoelectric
equation
K max = h _ � h _ 0
Since K max is +ve, the photoelectric emission occurs
only if
h _ > h _ 0
or _ > _ 0
The photoelectic emission occurs only when the
incident light has more than a certain minimum
frequency. This minimum frequency is called
threshold frequency.