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Q.

The maximum kinetic energy Emax of photoelectrons emitted in a photoelectric cell varies with frequency (ν) as shown in the graph. The slope of the graph is equal to

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a

 Planck's constant

b

em of the electron

c

 charge of the electron

d

work function of the emitter

answer is D.

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Detailed Solution

Equation for maximum energy of emitted photoelectron,

Emax=hν-hν0

is the equation of a straight line with slope h.

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