Two identical long conducting wires AOB and COD are placed at right angle to each other, will one above other such that O is their common point for the two. The wires carry I₁ and […]
The resistance in the two arms of the meter bridge are 5Ω and RΩ, respectively. When the resistance R is shunted with an equal resistance, then the new balance point is at 1.6l₁. The resistance […]
The oscillation of a body on a smooth horizontal surface is represented by the equation, X=A cos(ωt) where, X=displacement at time t ω= frequency of oscillation Which one of the following graphs shows correctly the […]
The number of possible natural oscilations of air column in a pipe closed at one end of length 85 cm whose frequencied lie below 1250 Hz are (Velocity of sound = 340 m s⁻¹)
The given graph represents V-I characteristic for a semiconductor device.
Which of the following statement is correct?
Options
(a) It is V-I characteristic for solar cell, where point A represents open circuit […]
The force F acting on a particle of mass m is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is […]
The binding energy per nucleon of ₃⁷Li and ₂⁴He nuclei are 5.60 MeV and 7.06MeV, respectively. In the nuclear reaction ₃⁷Li+₁¹H→ ₂⁴He+ ₂⁴He+Q, the value of energy Q released is
Options
(a) 19.6 […]
The barrier potential of a p-n junction depends on (1) type of semiconductor material (2) amount of doping (3) temperature Which one of the following is correct?
Options
(a) (1) and (2) only […]
The angle of a prism is A. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface returns back through the same path after suffering […]
In an ammeter, 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, then the resistance of ammeter will be
Options
(a) 1/499 G (b) 499/500 G (c) 1/500 […]
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