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JEE PHYSICS MCQ: DUAL NATURE OF RADIATION AND MATTER

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Statement 1: When the speed of an electron increases its specific charge decreases.

Statement 2: Specific charge is the ratio of the charge to mass.

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Correct option: C

Both the statements are correct

Option C (Both the statements are correct) is correct because specific charge is the ratio of charge to mass, and mass increases with velocity, thus decreasing specific charge.

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The electrons are emitted in the photoelectric effect from a metal surface What is the de Broglie wavelength of a bullet of mass 0.04 kg travelling at the speed of 1 km/s? Photoelectrons are emitted from a metal surface when UV light of wavelength

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A

is twice that by beam

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. Then, what can inference you about their frequencies? A 5 W source emits monochromatic light of wavelength

5000\mathop A\limits^ \circ

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