List of top Physics Questions asked in BITSAT

One main scale division of a vernier caliper is equal to m units. If the m division of main scale coincides with the (n+1)^{th} division of vernier scale, the least count of the vernier caliper is:

Identify the logic gate given in the circuit:

Which of the following transitions of He$^+$ ion will give rise to a spectral line that has the same wavelength as the spectral line in a hydrogen atom?

Which figure shows the correct variation of applied potential difference ($V$) with photoelectric current ($I$) at two different intensities of light ($I_1<I_2$) of same wavelengths:

A reverse biased zener diode when operated in the breakdown region works as:

A particle is moving in a straight line. The variation of position $ x $ as a function of time $ t $ is given as: \[ x = t^3 - 6t^2 + 20t + 15 \] The velocity of the body when its acceleration becomes zero is:

A parallel plate capacitor consists of two circular plates of radius $ R = 0.1 $ m. They are separated by a short distance. If the electric field between the capacitor plates changes as: \[ \frac{dE}{dt} = 6 \times 10^{13} \frac{V}{m \cdot s} \] then the value of the displacement current is:

Electric potential at a point 'P' due to a point charge of $ 5 \times 10^{-9} $ C is 50 V. The distance of 'P' from the point charge is: (Assume, $ \frac{1}{4\pi\epsilon_0} = 9 \times 10^{9} \, {Nm}^2{C}^{-2} $)

In the following circuit diagram, when the $3\Omega$ resistor is removed, the equivalent resistance of the network:

A rectangular loop of length $ 2.5 $ m and width $ 2 $ m is placed at $ 60^\circ $ to a magnetic field of $ 4 $ T. The loop is removed from the field in $ 10 $ sec. The average emf induced in the loop during this time is:

A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40% of the original value. The percentage change in its resistance will be:

An oil drop of radius $1 \, \mu{m}$ is held stationary under a constant electric field of $3.65 \times 10^4 \, {N/C}$ due to some excess electrons present on it. If the density of the oil drop is $1.26 \, {g/cm}^3$, then the number of excess electrons on the oil drop approximately is:
[Take, g = 10 m/s2]

In an AC circuit, an inductor, a capacitor, and a resistor are connected in series with $ X_L = R = X_C $. The impedance of this circuit is:

Find the average value of the current shown graphically from $ t = 0 $ to $ t = 2 $ s.

A parallel plate capacitor with plate area $A$ and plate separation $d = 2$ m has a capacitance of $4\mu F$. The new capacitance of the system if half of the space between them is filled with a dielectric material of dielectric constant $K = 3$ (as shown in the figure) will be:

An alternating voltage $ V(t) = 220 \sin 100\pi t $ volt is applied to a purely resistive load of $ 50\Omega $. The time taken for the current to rise from half of the peak value to the peak value is:

The dimensional formula of latent heat is:

There are two long co-axial solenoids of the same length $ l $. The inner and outer coils have radii $ r_1 $ and $ r_2 $ and the number of turns per unit length $ n_1 $ and $ n_2 $, respectively. The ratio of mutual inductance to the self-inductance of the inner coil is:

The dimensions of the coefficient of self-inductance are:

If two charges $ q_1 $ and $ q_2 $ are separated with distance 'd' and placed in a medium of dielectric constant K. What will be the equivalent distance between charges in air for the same electrostatic force?

The straight wire AB carries a current $I$. The ends of the wire subtend angles $\theta_1$ and $\theta_2$ at the point $P$ as shown in the figure. The magnetic field at the point $P$ is:

A wire of resistance $160\Omega$ is melted and drawn into a wire of one-fourth of its length. The new resistance of the wire will be:

The electrostatic force $ \mathbf{F_1} $ and magnetic force $ \mathbf{F_2} $ acting on a charge $ q $ moving with velocity $ v $ can be written as:

A plane progressive wave is given by y = 2 cos 2pi (330t - x) m. The frequency of the wave is:}

The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then, the potential of each single drop was: