GATE PH format:msq PYQs & Answers — Page 2

Questions 11–20 of 88. Imported answers require independent review unless marked reviewed.

particle moves towards a fixed nucleus carrying charge

, with initial speed

and impact parameter

. Starting from a large distance from the nucleus, its distance of closest approach is

and its speed there is

. Then which of the following options is/are correct? (

and

)

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

For

ignoring higher order corrections in

For

ignoring higher order corrections in

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Which of the following option(s) is/are correct for the ground state of a hydrogen atom?

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

Linear Stark effect is zero

It has definite parity

Spin-orbit coupling is zero

Hyperfine splitting is zero

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Which of the following option(s) is/are correct for photons?

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

Its rest mass is zero, but its energy is non-zero

It carries non-zero linear momentum

It carries zero spin angular momentum

It has two linearly independent states of polarization

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A schematic Pressure-Temperature diagram of water is shown in the figure. Which of the following option(s) is/are correct?

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

Clausius-Clapeyron equation is valid across the melting curve and the vaporization curve

Melting curve has the highest slope

The critical point exists only for the vaporization curve

Clausius-Clapeyron equation is not valid across the melting curve and the vaporization curve

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Which of the following consideration(s) is/are shown that nuclear beta decay,

, has to be a three-body decay?

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

Continuous distribution of the electron energy

Spin of the final state

Mass of the electron

Mass of the proton

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Potential energy of two diatomic molecules P and Q of the same reduced mass is shown in the figure. According to this diagram, which of the following option(s) is/are correct?

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

The equilibrium inter-nuclear distance of Q is more than that of P

The total energy

separates bound and unbound states of the molecules

The lowest vibrational frequency of P is larger than that of Q

Dissociation energy of Q is more than that of P

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Nuclear radiation emitted from a

radioactive source is detected by a photomultiplier tube (PMT) coupled to a scintillator crystal. Which of the following option(s) is/are correct?

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

radiation from

will directly hit the photocathode of the PMT without interacting with the scintillator crystal and produce a signal

radiation from

source interacts with the scintillator crystal, producing

radiation, which will hit the photocathode of the PMT and produce a signal

A mu-metal shield is put all around the PMT to nullify the effect of external electric fields

A mu-metal shield is put all around the PMT to nullify the effect of external magnetic fields

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Which of the following option(s) is/are correct for a Type I superconductor?

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

The phase transition to the normal state in the absence of a magnetic field is of second order

With increase in temperature, the critical magnetic field decreases linearly to zero

Below the critical temperature, the entropy in the superconducting state is less than that in the normal state

The phase transition to the normal state in the presence of a magnetic field is of first order

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Consider two hypothetical nuclei

and

undergoing

decay, resulting in nuclei

and

, respectively. The decay scheme and the corresponding

values of the nuclei are given in the figure. Which of the following option(s) is/are correct? (

is the total angular momentum and

is parity)

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

is Fermi transition and

is Fermi transition

is Fermi transition and

is Gamow-Teller transition

is Gamow-Teller transition and

is Fermi transition

is Gamow-Teller transition and

is Gamow-Teller transition

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A point charge

is placed at a distance

above an infinite, grounded conducting plate placed on the

plane at

. The electrostatic potential in

region is given by

, where

and

. Which of the following option(s) is/are correct?

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

The magnitude of the force experienced by the point charge

The electrostatic energy of the system is

The induced surface charge density on the plate is proportional to

The electrostatic potential

satisfies Poisson’s equation for

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GATE PH format:msq PYQs

Question 56

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 47

Question 48

Question 49