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AIIMS (All India Institute of Medical Sciences) Physics: Questions 437 - 442 of 500

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Question 437

Appeared in Year: 2003

Question

MCQ▾

Initial decay rate of a substance is . If half life of substance is . then after three second the decay rate will be – [RPMT]

Choices

Choice (4)Response

a.

b.

c.

d.

Question 438

Appeared in Year: 2009

Question

MCQ▾

Monochromatic light of wavelength is produced by a helium neon laser. The power emitted is . The number of photons arriving per second on the average at a target irradiated by this beam is –

[AIPMT]

Choices

Choice (4)Response

a.

b.

c.

d.

Question 439

Question

MCQ▾

If distance between Young double slits becomes half, the fringe width becomes –

Choices

Choice (4)Response

a.

b.

c.

d.

Unchanged

Question 440

Appeared in Year: 1996

Question

MCQ▾

The wavelength of X-rays produced by an X-ray tube is . The atomic number of the anode material of the tube is – [IIT]

Choices

Choice (4)Response

a.

60

b.

20

c.

80

d.

41

Question 441

Appeared in Year: 1998

Question

MCQ▾

For the diffraction from a crystal with and Bragg՚s angle , then for the second order diffraction will be – [AIPMT]

Choices

Choice (4)Response

a.

b.

c.

d.

Question 442

Question

MCQ▾

Calculate the work done in bringing a charge of from infinite point to P. At point P potential is, due to a charge of located away.

Choices

Choice (4)Response

a.

b.

c.

d.

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