Dual Nature of Matter and Radiation-Particle Nature of Light (NEET Physics): Questions 1 - 2 of 2

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Question number: 1

» Dual Nature of Matter and Radiation » Particle Nature of Light

MCQ▾

Question

In a photo-emissive cell with exciting wavelength λ, the fastest electron has speed V. If the exciting wavelength is changed to 3λ4 , the speed of the fastest emitted electron will be

Choices

Choice (4) Response

a.

v(34)12

b.

Greaterthanv(43)12

c.

Lessthanv(43)12

d.

v(43)12

Question number: 2

» Dual Nature of Matter and Radiation » Particle Nature of Light

Appeared in Year: 2016

MCQ▾

Question

Photons with energy 5eV are incident on a cathode C in a photoelectric cell. The maximum energy of emitted photoelectrons is 2eV . When photons of energy 6eV are incident on C, no photoelectrons will reach the anode A, if the stopping potential of A relative to C is:

Choices

Choice (4) Response

a.

+4V

b.

1V

c.

3V

d.

+3V

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