List of practice Questions

Dimension of force is:
Find current (i) in circuit shown in figure.
Find current (i) in circuit shown in figure.
Find Rnet between A and B.Find Rnet between A and B
The efficiency of an ideal gas with adiabatic exponent γ for the shown cyclic process would be
The efficiency of an ideal gas with adiabatic exponent γ
Velocity is given by \(v=4t(1-2t)\), then find time at which velocity is maximum.
A disc of moment of inertia 2 kg m2 revolving with 8 radian/sec, is placed on another disc of moment of inertia 4 kg m2 revolving 4 radian/sec. What is the angular frequency of composite disc?
A regular hexagon of side a. A wire of length 24a is oiled on that hexagon. If current in hexagon is I then find the magnetic moment.
A regular hexagon of side a. A wire of length 24a is oiled on that hexagon
A runner starts from O and goes to O following path OQRO in 1 hr. What is the net displacement and average speed?
net displacement and average speed
\(e^-\) revolving with speed V is producing magnetic field B at center. Find relation between radius of path, B & V?
If point charges \(Q_1=2×10^{-7}C\) and \(Q_2=3×10^{-7}C\) are at 30 cm separation, then find electrostatic force between them
In a LC circuit angular frequency at resonance is ω. What will be the new angular frequency when inductor's inductance is made 2 times and capacitance is made 4 times?
The magnetic moment of an electron orbiting in a circulate orbit of radius r with a speed v is equal to
\(5sin \frac \pi 2(100t -2x)\)
what is the time period?
A organ pipe open on both ends in the nth harmonic is in resonance with a source of 1000 Hz. The length of pipe is 16.6 cm and speed of sound in air is 332 m/sec. Find the value of n.
Find density of ethanol
Find density of ethanol
Find ratio of radius of gyration of a disc and ring of same radii at their tangential axis in plane.
A ball of 0.5 kg collided with wall at 30° and bounced back elastically. The speed of ball was 12 m/s. The contact remained for 1 sec. What is the force applied by wall on ball?
A \(e^-\) when accelerated by \(V\) volts experiences a force \(F\) when it enters a uniform magnetic field. What will the force experience when it is accelerated by \(2V\) volts ?
If the efficiency of the engine is 50%, and its work output is 500 J. Find input?
Kinetic energy of a particle increased 4 times. What will be the relation between initial and final momentum.
The efficiency of heat engine is \(\frac 16\), its efficiency is doubled when the temperature of sink decreases by 62°C, its efficiency doubles. Then what is the temperature of source?
What is the range of a projectile thrown with velocity 98 m/s with angle 30° from horizontal?
Which of the following is fusion?
A chemical reaction was carried out at 300 K and 280 K. The rate constant were found to be \(k_1\) and \(k_2\) respectively, then
A current is flowing through the wire of diameter \(d\) having drift velocity of electron \(v_d\) in it. What will be new drift velocity when diameter of wire is made \(\frac d4\) ?