GATE PH 2021 Paper 1 — page 12

Questions 34–36 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 12 of 22

Consider the atomic system as shown in the figure, where the Einstein A coefficients for spontaneous emission for the levels are

and

. If

atoms/cm

are excited from level 0 to level 2 and a steady state population in level 2 is achieved, then the steady state population at level 1 will be

. The value of

(in integer) is ______.

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and

are constant vectors,

and

are generalized positions and conjugate momenta, respectively, then for the transformation

and

to be canonical, the value of

(in integer) is ______.

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The above combination of logic gates represents the operation

Your answerChoose one option.

NAND

AND

NOR

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2021 · Paper 1