A charge q is moving with a velocity opposite to the direction of magnetic field force on the charge due... View Article
Two stones having different masses m1 and m2 are projected at angles θ and (90 – θ) with the same... View Article
The blades of an aeroplane are rotating at the rate of 600 revolutions per minute the angular velocity of blades... View Article
Two inductors of inductance l each are connected in series with the opposite magnetic fluxes, the resultant inductance is (a)... View Article
Two plane mirrors are inclined at an angle theta. If any ray incident on one mirror becomes anti-parallel after reflection... View Article
An open pipe of length 33 cm resonates with frequency of 750 hz if the speed of the sound is... View Article
Two coils have a mutual inductance of 0.01 H. The current changes in the first coil according to the equation I = 5sin 200πt. What is the maximum value of emf induced in the second coil?
Π V 10π V 0.1π V 0.01 π V Answer: 10π V
The momentum of a body in two perpendicular direction at any time t are given by Px = 2t2 +... View Article
An ideal heat engine operates between 227°C and 127°C. It absorbs 5 kcal of heat at higher temperatures. What is... View Article
A charge q is moved from A to C along with the path ABC as shown in the figure the... View Article
In the given circuit, the resistance of the circuit is 4kΩ, then the error in the reading of the voltmeter... View Article
A galvanometer has resistance of 900 ohms. In order to send only 10 % of main current through this galvanometer... View Article
In the circuit diagram the input is across the terminal a and c and the output is across b and... View Article
The primary winding of an ideal transformer has 1000 turns whereas its secondary has 5000 turns. The primary is connected... View Article
In a particular system, the units of length mass and time are chosen to be 10 cm, 100 g and... View Article
If λ1 λ2 λ3 are the wavelength of the waves produced by fundamental first overtone and second overtone frequency respectively... View Article
An elevator descends into a mine shaft at the rate of 7 meters per minute if the descent starts 10... View Article
Two aluminium wires have lengths in the ratio 1:2, and their radii are in the ratio 1:√2. If they stretched... View Article
A ray of light travelling in a vacuum enters into a medium of refractive index μ. It is found that... View Article
The variation of the intensity of magnetisation with respect to the magnetising field in a diamagnetic substance is described by... View Article
