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Physics
Multiple Choice Question with Only One Choice Correct At frequencies of the incident radiation above the threshold frequency, the photoelectric current in a photoelectric cell increases with increase in (a) intensity of incident radiation (b) wavelength of incident radiation (c) frequency of incident radiation (d) speed of incident radiation
Chemistry
Fill in the Blank : The shape of XeF₄ is ........... .
Mathematics
Let a, b, c be distinct non-negative numbers. If the vector ai + aj + ck, i + k, ci + cj + bk lie in a plane, then c is (a) the arithmetic mean of a and b (b) the geometric mean of a and b (c) the harmonic mean of a and b (d) equal to zero