Solid State Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 37 - 41 of 68

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Passage

Consider Fermi theory of decay.

Question 37 (1 of 2 Based on Passage)

Solid State Physics

Appeared in Year: 2006

Question

MCQ▾

The number of final state of electrons corresponding to momenta between and is –

Choices

Choice (4)Response

a.

proportional to

b.

proportional to

c.

proportional to

d.

independent of

Question 38 (2 of 2 Based on Passage)

Solid State Physics

Appeared in Year: 2006

Question

MCQ▾

The number of emitted electron with momentum and energy , in the allowed approximation, is proportional to ( is the total energy given up by the nucleus) –

Choices

Choice (4)Response

a.

b.

c.

d.

Passage

The powder diffraction pattern of a body centered cubic crystal is recorded by using X – rays of wavelength .

Question 39 (1 of 2 Based on Passage)

Appeared in Year: 2006

Question

MCQ▾

Assuming the atomic mass of the constituent atoms to be , then density of the crystal in units of is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 40 (2 of 2 Based on Passage)

Appeared in Year: 2006

Question

MCQ▾

If the planes diffract at , then lattice parameter is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 41

Appeared in Year: 2007

Question

MCQ▾

When liquid oxygen is poured down close to a strong bar magnet, the oxygen stream is –

Choices

Choice (4)Response

a.

Attracted towards the higher field because it is diamagnetic

b.

Repelled towards the lower field because it is paramagnetic

c.

Attracted towards the higher field because it is paramagnetic

d.

Repelled towards the lower field because it is diamagnetic

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