Class 12

29. Electron, Photon, Photoelectric Effect & X-Ray question bank (Physics)

Practice 663 free Class 12 Physics - 29. Electron, Photon, Photoelectric Effect & X-Ray questions with answers and step-by-step solutions.

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Q1.

In the Millikan's experiment, the distance between two horizontal plates is 2.5 cm and the potential difference applied is 250 V. The electric field between the plates will be

(A)
900 V/m
(B)
10000 V/m
(C)
625 V/m
(D)
6250 V/m
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Q2.

The cathode rays have particle nature because of the fact that

(A)
They can propagate in vacuum
(B)
They are deflected by electric and magnetic fields
(C)
They produced fluorescence
(D)
They cast shadows
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