The differential cross-section for scattering by a target is given by \frac{d\sigma }{d\Omega }(\theta ,\phi )={a}^{2}+{b}^{2}{cos}^{2}\theta. If N is the flux of the incoming particles, the number of particles scattered per unit time is

Scattering theory — CSIR NET Physics PYQ (Question 2)

A Scattering theory previous year question (PYQ) from Quantum Mechanics (CSIR NET physics). Read the question, check the correct answer, then practise the full topic.

Question 2 of 14 · 5.0 marks

The differential cross-section for scattering by a target is given by

\frac{d σ}{d Ω} (θ, ϕ) = a^{2} + b^{2} cos^{2} θ

.
If

N

is the flux of the incoming particles, the number of particles scattered per unit time is

1 $\frac{4 π}{3} N (a^{2} + b^{2})$
2 $4 π N (a^{2} + \frac{1}{6} b^{2})$
3 $4 π N (\frac{1}{2} a^{2} + \frac{1}{3} b^{2})$
4 $4 π N (a^{2} + \frac{1}{3} b^{2})$

Correct answer: Option 4

← Previous Next →

Practise all 14 Scattering theory questions with instant feedback.

Practise this topic →

About this question

This Scattering theory PYQ is part of the Quantum Mechanics section of CSIR NET physics. Browse more Scattering theory questions or join the PhysicsByAaryan live batch for full conceptual coverage.