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 […]
In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V is in volts and x,y,z are in metres. The electric force experienced by a charge of 2 coulomb situated at point (1,1,1) is
If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-broglie wavelength of the particle is
Options
(a) 25 (b) 75 (c) 60 […]
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