GATE PH topic:physics PYQs & Answers — Page 46

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Questions 451–460 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 46 of 65

A hydrogen atom is in an orbital angular momentum state

. If

lies on a cone which makes a half angle

with respect to the z-axis, the value of

is _____.

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In the center of mass frame, two protons each having energy 7000 GeV, collide to produce protons and anti-protons. The maximum number of anti-protons produced is _____.

(Assume the proton mass to be 1 GeV/

)

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Consider a gas of hydrogen atoms in the atmosphere of the Sun where the temperature is 5800 K. If a sample from this atmosphere contains

of hydrogen atoms in the ground state, the number of hydrogen atoms in the first excited state is approximately

, where

is an integer. The value of

is _____.

(Boltzmann constant:

eV/K)

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For a gas of non-interacting particles, the probability that a particle has speed

in the interval

is given by

is the energy of a particle, then the maximum in the corresponding energy distribution in units of

occurs at _____ (rounded off to one decimal place).

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The Planck’s energy density distribution is given by

. At long wavelengths, the energy density of photons in thermal equilibrium with a cavity at temperature

varies as

, where

is _____.

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The fishermen, ______ the flood victims owed their lives, were rewarded by the government.

Your answerChoose one option.

whom

to which

to whom

that

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Some students were not involved in the strike.

If the above statement is true, which of the following conclusions is/are logically necessary?

Some who were involved in the strike were students.

No student was involved in the strike.

At least one student was involved in the strike.

Some who were not involved in the strike were students.

Your answerChoose one option.

1 and 2

2 and 3

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The radius as well as the height of a circular cone increases by 10%. The percentage increase in its volume is ______.

Your answerChoose one option.

17.1

21.0

33.1

72.8

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Five numbers 10, 7, 5, 4 and 2 are to be arranged in a sequence from left to right following the directions given below:

No two odd or even numbers are next to each other.

The second number from the left is exactly half of the left-most number.

The middle number is exactly twice the right-most number.

Which is the second number from the right?

Your answerChoose one option.

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Until Iran came along, India had never been ______ in kabaddi.

Your answerChoose one option.

defeated

defeating

defeat

defeatist

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GATE PH topic:physics PYQs

Question 51

Question 52

Question 53

Question 54

Question 55

Question 1

Question 2

Question 3

Question 4

Question 5