Bsc Physics 3rd Year Question Paper

Bsc Physics 3rd Year Question Paper

Hello friends welcome to our site Helpful Group. If you are a bsc physics 3rd year students and searching for bsc physics 3rd year question paper then you are in the right place because in this article we share bsc physics 3rd year question paper, so please completely read the article to get bsc physics 3rd year question paper.

Bsc Physics 3rd Year Question Paper

Bsc Physics 3rd Year Question Paper 2019

Q.1.
What is absolute reference frame ? Describe Michelson-Morley experiment. Discuss negative result of this experiment.
OR
Obtain the theorom of addition of relativistic velocities. Use it to show that the ultimate speed of a material particle is c, where c is the speed of light in vaccum.

Q.2.
What is Photoelectric effect ? Why could it not be explained by the classical theory ? How could explained Einstein by the Planck's quantum theory.
OR
(a) Calculate the de-Broglie wavelength of an electron accelerated through a potential difference of 1.25 killo-volt.
(b) What is Heisenberg uncertainty princeple ? On its basis show that electron can not reside inside the nucleus.

Q.3.
Discuss the pure vibrational spectra in diatomic molecules. Show that the vibrational energy state of diatomic molecule are quantised and equispaced.
OR
Write short notes on :
(i) Raman effect
(ii) L-S coupling

Q.4.
Explain the construction and working of a Geiger Muller counter. Describe its main characteristics.
OR
Write short notes on :
(i) Liquid drop model
(ii) Proton-Proton cycle (p-p cycle)


Bsc Physics 3rd Year Question Paper 2020

Q.1.
(a) what are the cause of failure of proton-electron hypothesis of nuclear constitution ?
(b) Derive the relation of energy equivalent to 1 a.m.u.

Q.2.
(a) Mass formula of liquid drop model
(b) Using single-particle shell model predict the ground state spin and parity of :

Q.3.
Derive Bethe-Block formula for energy loss of a charged particle in matter.

Q.4. 
Explain the princeple, construction and working of a G.M. Counter. How can it be used to defect neutron ?

Q.5. 
Describe the princeple, construction and working of a cyclotron. What are it's limitations ?

Bsc Physics 3rd Year Question Paper 2021

Q.1. 
Distinguish between Leptons, Mesons, Baryons and give examples of each.
OR
Derive Bragg's equation from van-Laue's equation.

Q.2.
Show that reciprocal lattice of bcc lattice is fcc lattice.
OR
Discuss liquid drop model of nucleus.

Q.3. 
Discuss the crystal structure of NaCl. Draw the conventional cubic cell and show the spatial arrangement of Na and Cl atoms.

Q.4. 
What are nuclear forces ? Explain their properties.
OR
What are ionic crystal and ionic bonding. Obtain an expression for cohesive energy of ionic crystal.

Q.5. 
Explain the princeple construction and working of G.M. counter. What is quenching and how it is achieved.
Post a Comment (0)
Previous Post Next Post