1.

Ultraviolet light of wavelength 300 nm and intensity 1.0 watt/m2 falls on the surface of a photosensitive material. If 1% of the incident photons produce photoelectrons, then the number of photoelectrons emitted from an area of 1.0 cm2  of the surface is nearly                                       [AMU 1995]

A.            \[9.61\times {{10}^{14}}per\ \sec \]per sec                
B.            \[4.12\times {{10}^{13}}per\ \sec \] per sec
C.            \[1.51\times {{10}^{12}}per\ \sec \] per sec               
D.            \[2.13\times {{10}^{11}}per\ \sec \] per sec
Answer» D.            \[2.13\times {{10}^{11}}per\ \sec \] per sec


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