List of top Physics Questions asked in BITSAT

Which of the following is not an example of perfectly inelastic collision?

If density of earth increases $4$ times and its radius becomes half of what it is, our weight will

The force constant of a spring gun is $50 \,N / m$. If a ball of $20 \,g$ be shoot by the gun, so that its spring is compressed by $10 \,cm$, the velocity of the ball is:

Natural length of a spring is $60 \,cm$ and its spring constant is $4000 \,N / m$. A mass of $20\, kg$ is hung from it. The extension produced in the spring is $\left(\right.$ take $\left.g=9.8 \,m / s ^{2}\right)$ :

A point source of light is placed $4 \,m$ below the surface of water of refractive index $\frac{5}{3}$. The minimum diameter of a disc, which should be placed over the source, on the surface of water to cut-off all right coming out of water is

Which of the following is not an example of perfectly inelastic collision

The magnitude of electric field intensity $E$, such that an electron placed in it would experience an electrical force equal to its weight, is given by

Fast neutrons can easily be solved down by

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) will be

An electron is accelerated under a potential difference of 182 V. The maximum velocity of electron will be (Charge of electron is $1.6 \times 10^{-19}C $ and its mass is $9.1 \times 10^{-31}kg) $

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

A spring is compressed between two toy carts of mass $m_1$ and $m_2$. When the toy carts are released, the springs exert equal and opposite average forces for the same time on each toy cart. If $V_1$ and $V_2$ are the velocities of the toy carts and there is no friction between the toy carts and the ground, then :

A solenoid of 1.5 m length and 4.0 cm diameter possesses 10 turns/cm. A current of 5 A is flowing through it. The magnetic induction at axis inside the solenoid 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) ?

The upper end of a wire of diameter $12\,mm$ and length $1\,m$ is clamped and its other end is twisted through an angle of $30^{\circ}$. The angle of shear is

A long string is stretched by $2\, cm$ and the potential energy is $V$. If the spring is stretched by $10\, cm$, its potential energy will be

In the equation $PV^\gamma$ = constant, the value of $\gamma$ is unity. Then the process is

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 body is travelling in a circle at a constant speed. It

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

A spherical ball is dropped in a long column of a viscous liquid. The speed $(v)$ of the ball as a function of time $(t)$ may be best represented by

Two blocks are connected over a massless pulley as shown in fig. The mass of block $A$ is $10\, kg$ and the coefficient of kinetic friction is $0.2$. Block A slides down the incline at constant speed. The mass of block $B$ in $kg$ is:

Which of the following is best nuclear fuel