The mass of a photoelectron is

Important Questions on Dual Nature of Radiation and Matter

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CUET (UG)

IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 2

The linear momentum of an electron, initially at rest, accelerated through a potential difference of $100 \mathrm{V}$ is

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 3

The material used for making thermionic cathode must have

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 4

The time taken by a photoelectron to come out after the photon strikes is approximately

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 5

Continuous emission spectrum is produced by

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 6

If the intensity of incident light is increased in photoelectric emission, then which of the following is true?

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 7

The emission of electrons from a metal begins when green light is incident on it. The emission of electrons will be possible for which of the following group of colours?

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 8

Emission of electrons by the absorption of heat energy is called ................. emission.

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IMPORTANT

Achieve CUET (UG) Physics Practice Book>Chapter 11 - Dual Nature of Radiation and Matter>Exercise>Q 9

Consider a beam of electrons (each electron with energy $E_o$) incident on a metal surface kept on an evacuated chamber. Then