DUAL NATURE OF RADIATION AND MATTER Set 4

Question - 15 Maximum mark : - 15

X-rays are

Stream of electrons Stream of positively charged particles Electromagnetic radiantions of high frequency Stream of uncharged particles NULL NULL NULL

Work function of lithium and copper are respectively

and

Which one of the metal will be useful for the photoelectric cell working with visible light

Lithium Copper Both A and B None of these NULL NULL NULL

In Davisson - Germer experiment maximum intensity is observed at

and 54 V

and 50 V

and 50 V NULL NULL NULL

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