AIIMS (All India Institute of Medical Sciences) Physics: Questions 449 - 454 of 500

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Question number: 449

» Dual Nature of Matter and Radiation » Photoelectric Effect

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MCQ▾

Question

What will be the wavelength of incident photon, if the threshold wavelength of a metal is and photo electrons have kinetic energy maximum

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 450

» Dual Nature of Matter and Radiation » De-Broglie Relation

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MCQ▾

Question

An particle moves in circular path of radius in the presence of a magnetic field of . Find the De – Broglie wavelength associated with the particle.

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Choice (4)Response

a.

b.

c.

d.

Question number: 451

» Dual Nature of Matter and Radiation » De-Broglie Relation

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MCQ▾

Question

A proton and an particle accelerated through same voltage of . The ratio of their De-Broglie wavelength will be:

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Choice (4)Response

a.

b.

c.

d.

Question number: 452

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

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Appeared in Year: 1998

MCQ▾

Question

Work function of a metal surface is . If a light of wavelength falls on it then the maximum K. E of ejected electron will be –

[AIPMT]

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 453

» Ray Optics » Deviation and Dispersion of Light by a Prism

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Appeared in Year: 2001

MCQ▾

Question

A disc is placed on a surface of pond which has refractive index. A source of light is placed below the surface of liquid. The minimum radius of disc will be so light is not coming out – [AIPMT]

Choices

Choice (4)Response

a.

6m

b.

4m

c.

d.

3m

Question number: 454

» Atoms and Nuclei » Half Life and Mean Life

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Appeared in Year: 2002

MCQ▾

Question

A sample of radioactive element is containing active nuclei. Half life of element is 10 days, then number of decayed nuclei after 30 days –

[AIPMT]

Choices

Choice (4)Response

a.

0.5 x 1015

b.

3.5 x 1015

c.

2 x 1015

d.

1 x 1015

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