List of top Physics Questions asked in BITSAT

Which of the following does not depict the correct link between technology and physics?
An ideal refrigerator has a freezer at a temperature of $-13^{\circ} C$. The coefficient of performance of the engine is $5$. The temperature of the air (to which heat is rejected) is
Two planets $A$ and $B$ have the same material density. If the radius of $A$ is twice that of $B$, then the ratio of the escape velocity $V_{A} / V_{B}$ is
Two circular plates of radius $5\, cm$ each, have a $0.01\, mm$ thick water film between them. Then what will be the force required to separate these plate (S.T. of water = $73$ dyne/cm) ?
Suppose the gravitational force varies inversely as the nth power of distance. Then the time period of a planet in circular orbit of radius $R$ around the sun will be proportional to
The power dissipated in the circuit shown in the figure is $30$ Watts. The value of $R$ is
A point charge $+q$ is placed at the centre of a cube of side $L$. The electric flux emerging from the cube is
A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an a.c. source of 200 volt, 100 Hz is connected across the coil, the current in the coil will be
The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is
A plano-convex lens of focal length 30 cm has its plane surface silvered. An object is placed 40 cm from the lens on the convex side. The distance of the image from the lens is
In Young's double slit experiment, if the slit widths are in the ratio 1:2, the ratio of the intensities at maxima will be
When a mica sheet of thickness 7 microns and μ=1.6 is placed in the path of one of interfering beams in a biprism experiment then the central fringe gets at the position of seventh bright fringe. The wavelength of light used will be
The instantaneous current from an a.c. source is i = 6\sin314t. What is the rms value of the current?
The length of a potentiometer wire is . A cell of emf E is balanced at a length /3 from the positive end of the wire. If the length of the wire is increased by /2. At what distance will the same cell give a balance point?
A constant current i flows in a loop of radius r. It is placed in a uniform magnetic field B₀ such that B₀ is perpendicular to the plane of the loop. The magnetic force acting on the loop is
An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of required shunt is
At the magnetic north pole of the earth, the value of horizontal component of earth’s magnetic field and angle of dip are, respectively
Lenz’s law is a consequence of the law of conservation of
If on combining two charged bodies, the current does not flow then
Calculate the area of the plates of a one farad parallel plate capacitor if separation between plates is 1 mm and plates are in vacuum
An electron has an initial velocity in a direction different from that of an electric field, the path of the electron is
Two tuning forks A and B sounded together give 6 beats per second. When at resonance tube closed at one end, the two forks give resonance when the air columns are 24 cm and 25 cm respectively. Calculate the frequencies of forks.
A pendulum bob carries a +ve charge +q. A positive charge +q is held at the point of support. Then the time period of the bob is (where L = length of pendulum, gₑₓtₑff = effective value of g):
In case of a forced vibration, the resonance curve becomes very sharp when the
Which one of the following graphs represents the behaviour of an ideal gas? \includegraphics[width=0.5\linewidth]17.png