GATE PH purpose:exam-prep PYQs & Answers — Page 34

Questions 331–340 of 650. Imported answers require independent review unless marked reviewed.

On a planar field, you travelled 3 units East from a point O. Next you travelled 4 units South to arrive at point P. Then you travelled from P in the North-East direction such that you arrive at a point that is 6 units East of point O. Next, you travelled in the North-West direction, so that you arrive at point Q that is 8 units North of point P. The distance of point Q to point O, in the same units, should be

Your answerChoose one option.

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The author said, “Musicians rehearse before their concerts. Actors rehearse their roles before the opening of a new play. On the other hand, I find it strange that many public speakers think they can just walk on to the stage and start speaking. In my opinion, it is no less important for public speakers to rehearse their talks.” Based on the above passage, which one of the following is TRUE?

Your answerChoose one option.

The author is of the opinion that rehearsing is important for musicians, actors and public speakers.

The author is of the opinion that rehearsing is less important for public speakers than for musicians and actors.

The author is of the opinion that rehearsing is more important only for musicians than public speakers.

The author is of the opinion that rehearsal is more important for actors than musicians.

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Some football players play cricket.

All cricket players play hockey. Among the options given below, the statement that logically follows from the two statements 1 and 2 above, is:

Your answerChoose one option.

No football player plays hockey.

Some football players play hockey.

All football players play hockey.

All hockey players play football.

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In the figure shown above, PQRS is a square. The shaded portion is formed by the intersection of sectors of circles with radius equal to the side of the square and centers at S and Q.

The probability that any point picked randomly within the square falls in the shaded area is ________

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In an equilateral triangle PQR, side PQ is divided into four equal parts, side QR is divided into six equal parts and side PR is divided into eight equal parts. The length of each subdivided part in cm is an integer.

The minimum area of the triangle PQR possible, in cm

, is

Your answerChoose one option.

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Choose the graph that best describes the variation of dielectric constant (

) with temperature (

) in a ferroelectric material.

(

is the Curie temperature)

Your answerChoose one option.

Diagram for Physics question 1 (figure 2)

Diagram for Physics question 1 (figure 3)

Diagram for Physics question 1 (figure 4)

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A matter wave is represented by the wave function

where

is a constant. The unit vector representing the direction of propagation of this matter wave is

Your answerChoose one option.

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As shown in the figure, X-ray diffraction pattern is obtained from a diatomic chain of atoms

and

. The diffraction condition is given by

, where

is the order of the diffraction peak. Here,

is the lattice constant and

is the wavelength of the X-rays. Assume that atomic form factors and resolution of the instrument do not depend on

. Then, the intensity of the diffraction peaks is

Your answerChoose one option.

lower for even values of

, when compared to odd values of

lower for odd values of

, when compared to even values of

zero for odd values of

zero for even values of

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As shown in the figure, two metal-semiconductor junctions are formed between an n-type semiconductor

and metal

. The work functions of

and

are

and

, respectively with

The

characteristics (on linear scale) of the junctions is best represented by

Your answerChoose one option.

Diagram for Physics question 4 (figure 2)

Diagram for Physics question 4 (figure 3)

Diagram for Physics question 4 (figure 4)

Diagram for Physics question 4 (figure 5)

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Consider a tiny current loop driven by a sinusoidal alternating current. If the surface integral of its time-averaged Poynting vector is constant, then the magnitude of the time-averaged magnetic field intensity, at any arbitrary position,

, is proportional to

Your answerChoose one option.

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GATE PH purpose:exam-prep PYQs

Question 6

Question 7

Question 8

Question 9

Question 10

Question 1

Question 2

Question 3

Question 4

Question 5