CSIR Physical Sciences: Questions 114 - 117 of 389

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 389 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 250.00 or

Question number: 114

» Classical Mechanics » Special Theory of Relativity » Relativistic Kinematics

Appeared in Year: 2014

MCQ▾

Question

In a measurement of the viscous drag force experiment by spherical particles in a liquid, the force is found to be proportional to V13 ; where V is the measured value of each particle. If V is measured to be 30mm3 , with an uncertainty of 2.7mm3 , the resulting relative percentage uncertainty in measured force is – (December)

Choices

Choice (4) Response
a.

6

b.

0.09

c.

2.08

d.

3

Question number: 115

» Classical Mechanics » Periodic Motion » Normal Modes

Appeared in Year: 2014

MCQ▾

Question

A particle of mass m is moving in the potential V(x)=12ax2+14bx4; where a,b are positive constants. The frequency of small oscillation about a point of stable equilibrium is – (December)

Choices

Choice (4) Response
a.

6am

b.

2am

c.

am

d.

3am

Question number: 116

» Quantum Mechanics » Stern-Gerlach Experiment

Appeared in Year: 2012

MCQ▾

Question

The component along an arbitrary direction n^ , with direction cosines (nx,ny,nz) , of the spin of spin 12 particle is measured. The result is – (June)

Choices

Choice (4) Response
a.

±2(nx+ny+nz)

b.

±2nz

c.

0

d.

±2

Question number: 117

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2014

MCQ▾

Question

For a particular thermodynamic system the entropy S is related to the internal energy U and volume V by S=cU34V14 ; where c is a constant. The Gibbs potential G=UTS+pV for this system is – (June)

Choices

Choice (4) Response
a.

US4V

b.

3pU4T

c.

Zero

d.

cU3

Sign In