GATE PH format:msq PYQs & Answers — Page 7

Home
GATE
Physics
Topics
format:msq

Questions 61–70 of 88. Imported answers require independent review unless marked reviewed.

Topic practice 88 questionsPage 7 of 9

Complex function

(

is a real number) is

Your answerSelect all correct options. You can choose more than one.

continuous at

complex-differentiable at

analytic at

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

is the Fourier transform of

, then which of the following are true?

Your answerSelect all correct options. You can choose more than one.

implies

is real

implies

is purely imaginary

implies

is purely imaginary

implies

is real

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The ordinary differential equation

has a regular singularity at

Your answerSelect all correct options. You can choose more than one.

no finite value of

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For a bipolar junction transistor, which of the following statements are true?

Your answerSelect all correct options. You can choose more than one.

Doping concentration of emitter region is more than that in collector and base region

Only electrons participate in current conduction

The current gain

depends on temperature

Collector current is less than the emitter current

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A paramagnetic salt of mass

is held at temperature

in a magnetic field

. If

is the entropy of the salt and

is its magnetization, then

, where

is the Gibbs free energy. If the magnetic field is changed adiabatically by

and the corresponding infinitesimal changes in entropy and temperature are

and

, then which of the following statements are correct

Your answerSelect all correct options. You can choose more than one.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A particle of mass

is moving inside a hollow spherical shell of radius

so that the potential is

The ground state energy and wavefunction of the particle are

and

, respectively. Then which of the following options are correct?

Your answerSelect all correct options. You can choose more than one.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A particle of unit mass moves in a potential

. If the angular momentum of the particle is

, then which of the following statements are true?

Your answerSelect all correct options. You can choose more than one.

There are two equilibrium points along the radial coordinate

There is one stable equilibrium point at

and one unstable equilibrium point at

There are two stable equilibrium points along the radial coordinate

There is only one equilibrium point along the radial coordinate

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In a diatomic molecule of mass

, electronic, rotational and vibrational energy scales are of magnitude

and

, respectively. The spring constant for the vibrational energy is determined by

. If the electron mass is

then

Your answerSelect all correct options. You can choose more than one.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Electronic specific heat of a solid at temperature

, where

is a constant related to the thermal effective mass (

) of the electrons. Then which of the following statements are correct?

Your answerSelect all correct options. You can choose more than one.

is greater than free electron mass for all solids

Temperature dependence of

depends on the dimensionality of the solid

The linear temperature dependence of

is observed at

Debye temperature

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In a Hall effect experiment on an intrinsic semiconductor, which of the following statements are correct?

Your answerSelect all correct options. You can choose more than one.

Hall voltage is always zero

Hall voltage is negative if the effective mass of holes is larger than those of electrons

Hall coefficient can be used to estimate the carrier concentration in the semiconductor

Hall voltage depends on the mobility of the carriers

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE PH format:msq PYQs

Question 25

Question 26

Question 27

Question 28

Question 47

Question 48

Question 49

Question 50

Question 51

Question 52