2018 · Paper 1

Complete GATE PH 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 10–12 of 65. Imported answers require review unless explicitly marked reviewed.

Question 10

Open question

GAMCQ2 marksNeeds review

In a detailed study of annual crow births in India, it was found that there was relatively no growth during the period 2002 to 2004 and a sudden spike from 2004 to 2005. In another unrelated study, it was found that the revenue from cracker sales in India which remained fairly flat from 2002 to 2004, saw a sudden spike in 2005 before declining again in 2006. The solid line in the graph below refers to annual sale of crackers and the dashed line refers to the annual crow births in India. Choose the most appropriate inference from the above data.



Your answerChoose one option.

A.

There is a strong correlation between crow birth and cracker sales.

B.

Cracker usage increases crow birth rate.

C.

If cracker sale declines, crow birth will decline.

D.

Increased birth rate of crows will cause an increase in the sale of crackers.

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Question 1

Open question

PHMCQ1 markNeeds review

The eigenvalues of a Hermitian matrix are all

Your answerChoose one option.

A.

real

B.

imaginary

C.

of modulus one

D.

real and positive

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Question 2

Open question

PHMCQ1 markNeeds review

Which one of the following represents the 3p radial wave function of hydrogen atom? (a₀ is the Bohr radius)

Your answerChoose one option.

A.



B.



C.



D.



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