Download SGBAU B-Tech 2nd Sem Chemical Engineering Applied Physics II Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 2nd Sem Chemical Engineering Applied Physics II Previous Question Paper

B.E./ B.Tech. (Chemical Engineering) / B. Text. Second Scmestcr(01d Course)
Applied Physics - II : 2 S 2
P. Pages ; 2 AW - 3539
Time : Two Hours
:?Hi W
?l W Max. Marks; 40
Notes : 1. All question carry equal marks.
2. Due credit will be given to neatness and adequate dimensions.
3. Assume suitable data wherever necessary.
4 Use of pen Blue/Black ink/re?ll only for writing the answer book.
1 a) Obtain an expression for energy of an electron in n?h orbit of Bohr's atom. 4
b) State and explain two important concepts of vector atom model. 4
c) Enlistand describe all seven quantum numbers. 3
d) The wavelength of the ?rst member of the Balmer series in hydrogen spectrum is 6563 A?. 3
3- a)
b)
c)
d)
AW -
Calculate the wavelength of the ?rst member of Lyman series in the same spectIum.
OR
Draw an energy level diagram for hydrogen atom and explain spectral series of hydrogen 5
atom.
Describe F rank-Hertz experiment to prove the existence of discrete energy states for 5
electrons in atoms.
What is wave packet? Give physical signi?cance of wave function LP. 4
Explain the principle and working of cyclotron. 5
Draw the block diagram of CRO. ? 3
Derive an expression for vertical de?ection Y of electron beam in transverse electric ?eld. 3
Explain that electron travels parabolic path in transverse electric ?eld. _ 2
0R
Explain construction and working of Bainbridge Mass-Spectrograph. 5
What is positive rays? State its properties. 3
Explain motion of electron in crossed electric and magnetic ?elds. 3
The electron is passed through uniform magnetic field B =20x10'4 Wb/m2 follows a
circular path. If orbital velocity of electron is 4.396x107 m/ sec.Calculate the radius of
electron orbit.
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b)
c)
b)
e)
Discuss the theory of interference in uniform thin ?lm and obtain condition for bright
fringe and daIk fringe.
How will you determine wavelength of sodium light by using Newton's ring expt.?
What is wavelength of light that is deviated in ?rst order through an angle 20? by
transmission grating having 6000 Lines /cm?
OK
In Newton's ring experiment show that radius of dark ring is directly proportional to the
rout of number of rings.
What is plane transmission grating? [low it is prepared?
In Newton's ring experiment the diameter of 20?h ring was found to be 0.59 cm and that of
10?h ring was 0.336 cm. Il?the radius of curvature of plano-convcx lens is 1m; Calculate the
wavelength of light used.
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