Questions 241–250 of 1772. Imported answers require independent review unless marked reviewed.

Topic practice 1772 questionsPage 25 of 178

Question 44

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The figure below shows a plane PQR in a unit cell. The Miller indices of the plane PQR is
Diagram for Engineering Sciences question 44

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Question 45

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The unit of measurement for magnetic dipole moment of a body is
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Question 46

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B is the magnetic flux density and T

is the critical temperature. The Meissner effect is represented by
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Question 47

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For Al – 4.5 wt% Cu alloy, the correct sequence of precipitation during age hardening at room temperature is
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Question 48

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There is NO base-centered cubic lattice among the list of 14 Bravais lattices because of one or more of the following reasons
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Question 49

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For a conventional optical microscope, which of the following options regarding the resolution limit and the depth of field is/are correct?
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Question 50

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Which of the following phenomenon/phenomena contribute to intensity loss of electromagnetic radiation during transmission through a medium?
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Question 51

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If solid tin is in equilibrium with its vapor, the degree of freedom is (answer in integer) __________

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Question 52

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A GaP–GaAs semiconductor LED display has a band gap of 1.9 eV. The wavelength of emitted light in

m is (round off to two decimal places) __________
Given: Planck’s constant = 6.63 × 10

J s Velocity of light = 3 × 10

m s

1 eV = 1.6 × 10

J

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Question 53

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In an FCC crystal with lattice parameter a, consider the reaction of two leading partial dislocations, AB and CD, at the line of intersection of their slip planes (111) and (11̄1), respectively, as shown in the figure below. Dislocations, AB and CD, have Burgers vectors

and

, respectively, as given in the figure. Which one of the following options for the slip plane and the Burgers vector of the resulting dislocation is correct?
Diagram for Engineering Sciences question 53

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