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A light ray of 5895 Å wavelength travelling in vacuum enters a medium of refractive index 1.5. The speed of light in the medium is
The vectors of magnitude a, 2a, 3a meet at a point and their directions are along the diagonals of three adjacent faces of a cube. Then, the magnitude of their resultant is
If the points (1, 2, 3) and (2, -1, 0) lie on the opposite sides of the plane 2x + 3y - 2z = k, then
Four numbers are chosen at random (without replacement) from the set {l, 2, 3, ... , 20}.
Statement I The probability that the chosen numbers when arranged in some order will form an AP is 1/85.
Statement II If the four chosen numbers form an AP, then the set of all possible values of common difference is {± 1, ± 2, ± 3, ± 4, ± 5}.
Statement II is not correct, Since, we could get the common difference ‘6’ also
The resistance of a germanium junction diode whose V - I is shown in the figure, is (Vk = 0.3 V ).
A box contains 100 bulbs, out of which 10 are defective. A sample of 5 bulbs is drawn. The probability that none is defective, is
The ratio of the nuclear radii of elements with mass numbers 216 and 125 is
Which of the following is a fusion reaction?
Fusion reaction is
Correct (-)
Wrong (-)
Skipped (-)