0 8 9 2 Paragraph for question nos Three laser guns labelled

Last updated: 7/2/2023

0 8 9 2 Paragraph for question nos Three laser guns labelled as I II and III have power 2 watt 3 watt and 5 watt Not necessary in same order are used to produce photocurrent from metal plate Number of photons emitted by laser guns are 4 x 1018 5 x 1018 and 9 x 1018 per sec Metal plate have threshold energy 4 5 x 10 19 J Neither the power nor the number of photons emitted by a particular laser gun is known and it is known that all capable photons emit a photoelectron Minimum possible wavelength of emitted photoelectron is A 680 C 480 A 08 3 30 Minimum photocurrent which must be passed through the circuit A 2 88 B 1 44 C 2 08 D None of these D 0 64 Ratio of maximum to minimum photocurrent which can be passed through the circuit A 5 4 B 9 5 C 9 4 D 9 2