GATE MT 2020 Paper 1 — page 8

Questions 22–24 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 8 of 22

Select the correct spectra (shown on a log-log scale in the figures) for emission from a gray surface and a black body, both maintained at 1000 K.

Your answerChoose one option.

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Given the three vectors

and

, which one of the following statements is TRUE?

Your answerChoose one option.

and

are mutually perpendicular.

and

are coplanar.

makes an angle of 30° with the normal to the plane containing

and

makes an angle of 60° with the normal to the plane containing

and

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Angle between two neighboring tetrahedral bonds in Si having a diamond cubic structure is:

Your answerChoose one option.

102.5°

109.5°

120°

135.5°

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2020 · Paper 1