GATE (Graduate Aptitude Test in Engineering) Physics: Questions 17 - 20 of 659

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 659 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 17

» Thermodynamics and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2014



For a system of two bosons, each of which can occupy any of the two energy levels 0 and , the mean energy of the system at a temperature with is given by,


Choice (4) Response





Question number: 18

» Quantum Mechanics » Angular Momentum and Spin

Appeared in Year: 2014

Short Answer Question▾

Write in Short

A hydrogen atom is in the state

Where in denote the principal, orbital and magnetic quantum numbers, respectively. If is the angular momentum operator, the average value of is________.

Question number: 19

» Solid State Physics » Elements of Crystallography

Appeared in Year: 2015

Short Answer Question▾

Write in Short

The lattice parameters of an orthorhombic crystal are related by . In units of , the inter-planar separation between the planes is ________ (up to three decimal places)

Question number: 20

» Electronics » Semiconductor Devices

Appeared in Year: 2015

Short Answer Question▾

Write in Short

The bad gap of an intrinsic semiconductor is and . At 300 K, the Fermi level with respected to the edge of the valence band (in eV) is at ________ (up to three decimal places)

f Page
Sign In