List of top Physics Questions asked in BITSAT

If the force is given by $ F = at + bt^2$ with $t$ as time. The dimensions of $a$ and $b$ are

The Young?s modulus of a perfectly rigid body is

A wheel of radius $R$ rolls on the ground with a uniform velocity $v$. The relative acceleration of topmost point of the wheel with respect to the bottom most point is

A man of mass \(100 \,kg\). is standing on a platform of mass \(200 \,kg\). Which is kept on a smooth ice surface. If the man starts moving on the platform with a speed \(30 \,m/sec\) relative to the platform then calculate with what velocity relative to the ice the platform will recoil?

A solid body of constant heat capacity $1 \,J/?C$ is being heated by keeping it in contact with reservoirs in two ways : (i) Sequentially keeping in contact with $2$ reservoirs such that each reservoir supplies same amount of heat. (ii) Sequentially keeping in contact with $8$ reservoirs such that each reservoir supplies same amount of heat. In both the cases body is brought from initial temperature $100^{\circ}C$ to final temperature $200^{\circ}C$. Entropy change of the body in the two cases respectively is :

A body moves with uniform acceleration, then which of the following graph is correct ?

The electric field intensity just sufficient to balance the earth's gravitational attraction on an electron will be: (given mass and charge of an electron respectively are $9.1 \times 10^{-31}\, kg$ and $\left.1.6 \times 10^{-19} C \right)$.

A large drop of oil (density $0.8 \,g / cm ^{3}$ and viscosity $\eta_{0}$ ) floats up through a column of another liquid (density $1.2\, g / cm ^{3}$ and viscosity $\eta_{L}$ ). Assuming that the two liquids do not mix, the velocity with which the oil drop rises will depend on :

What is the moment of inertia of a solid sphere of density $\rho$ and radius $R$ about its diameter?

If the unit of force and length be each increased by four times, then the unit of energy is increased by

An oscillator is nothing but an amplifer with

A letter ' $A$ ' is constructed of a uniform wire with resistance $1.0\, \Omega$ per $cm$, The sides of the letter are $20\, cm$ and the cross piece in the middle is $10 \,cm$ long. The apex angle is $60$ . The resistance between the ends of the legs is close to:

Which of the following must be known in order to determine the power output of an automobile?

A horizontal overhead powerline is at height of $4m$ from the ground and carries a current of $100\,A$ from east to west. The magnetic field directly below it on the ground is $\left(\mu_{0} = 4\pi \times10^{-7} Tm A^{-1}\right) $

A passenger in an open car travelling at $30\, m / s$ throws a ball out over the bonnet. Relative to the car the initial velocity of the ball is $20 m / s$ at $60^{\circ}$ to the horizontal. The angle of projection of the ball with respect to the horizontal road will be :

A toroidal solenoid with an air core has an average radius of $15 \,cm$, area if crosssection $12\, cm ^{2}$ and $1200$ turns. Ignoring the field variation across the cross- section of the toroid, the self-inductance of the toroid is:-

A ball is dropped from height h and another from $2h.$ The ratio of time taken by the two balls to reach the ground is

The velocity of efflux of a liquid through an orific in the bottom of the tank does not depend upon

A cube has a side of length $1.2 \times 10^{-2} m$. Calculate its volume.

If a new planet is discovered rotating around sun with the orbital radius double that of the earth, then what will be its time period? (in earth's days) (Take $\sqrt{2}=1.4$ )

A steady current flow in a metallic conductor of non-uniform cross-section. The quantity/quantities remaining constant along the whole length of the conductor is/are

The Poisson's ratio of a material is $0.5$. If a force is applied to a wire of this material, there is a decrease in the cross-sectional area by $4 \%$. The percentage increase in the length is:

The work done in placing a charge of $8 \times 10^{-18} \, C$ on a capacitor of capacity $100\, \mu F$ is

The linear momentum $p$ of a body moving in one dimension varies with time $t$ according to the equation $p = a + bt^2$, where $a$ and $b$ are positive constant. The net force acting on the body is