Previous Year Exam Papers BITSAT 2010 Physics

The dimensions of the quantity hc (where h ) is

One second after the projection, a stone  moves at an angle of 45° with the horizon. Two second from the start, it is travelling horizontally, its angle of projection with the horizon is (given g = 10 ms⁻²)

A sphere of mass m moving with a constant velocity u hits another stationary sphere of the same mass. If e is the coefficient of restitution, then the ratio of the velocity of two spheres after collision will be

When the mass is rotated in a plane about a fixed point its angular momentum is directed along the

If the radius of the earth were to shrink  by one percent, its mass remaining the same, the value of g on the earth’s surface would

Density of sea water is 1.03 gcc⁻¹. A ship passes from fresh water into sea water. It will

Water is flowing through a tube of non-uniform cross-section. If the radii of the tube at the entrance and the exit are in the ratio 3 : 2, then the ratio of the velocities of flow of water at the entrance and the exit is

The equation  represents the equation of motion for a

A star emits light of wavelength λ and it is receding from the earth with a speed v_s. The shift in the wavelength of the spectral line observed on the earth is

The end A of rod AB length 1 m is maintained at 80℃ and the end B at 0℃. The temperature at a distance of 60 cm from the end A is

Two bulbs which  consume powers P₁ and P₂ are connected in series. The power consumed by the combination is

A current carrying circular coil is bent so as to convert it into a double loop, both the loops being concentric and are carrying current in the same direction. If B is the initial magnetic field at the centre, the final magnetic field at the centre will be

Ions of different momenta (p), having the same charge, enter normally a  uniform magnetic field. The radius of the orbit of an ion is proportional to

The impedance of a circuit consists of 3Ω resistance and 4Ω reactance. The power factor of the circuit is

Of the following, the one which has the largest de-Broglie wavelength for the same speed is

A block of mass 5 kg is placed on a rough inclined plane. The inclination of the plane is gradually increased till the block just begins to slide down. The inclination of the  plane is than 3 in 5. The coefficient of friction between the block and the plane is (g = 10 ms⁻²)

A body covers a total distance of 3S. The first S is covered with a velocity u the second S with v and the last S with ω. Then, the average velocity during the whole journey is

A block weighing w is held against a vertical wall by pressing horizontally with a force F. Then, F needed to hold the block is

A solid cylinder of mass 2 kg rolls down (pure rolling) an inclined plane from a height of 4 m. Its rotational  kinetic energy when its reaches the foot of the plane is (g = 10 ms⁻²)

The mean radius of the earth’s orbit around the sun is 1.5 × 10¹¹ m and that of the orbit of mercury is 6 × 10¹⁰ m. The mercury will revolve around the sun is nearly

A liquid X of density 3.36 g/cm³ is poured in a U-tube, which contains Hg. Another liquid Y is poured in left arm with height 8cm, upper levels of X and Y are same. What is density of Y?

Three conductors draw respectively currents of 1 A, 2 A and 4 A when connected in turn across a battery. If they are connected in series across the same battery, the current drawn will be

One junction of a thermocouple is at a particular temperature T_r , an another is at T. Its thermoemf is expressed as . At temperature T = T₀/2, the value of thermo electric  power will be

A convex lens makes a real  image 4cm long on a screen. When the lens is shifted to new position without disturbing the object, we again get a real image on the screen which is 16 cm tall. The length of the object must be

In germanium the energy gap is about 0.75 eV. The wavelength of light which germanium starts absorbing is

The transmitting antenna of a radio station is mounted vertically. At a point 10 km due north of the transmitter the peak electric field is 10⁻³ Vm⁻¹. The magnitude of the radiated magnetic filed is

In order to increase the current sensitivity of a moving coil galvanometer the

In a 10 m deep lake, the bottom is at a constant temperature of 4℃. The air temperature is constant at −4℃. The thermal conductivity of ice is 3 times that of water. Neglecting the expansion of water on freezing, the maximum thickness of ice will

The ratio of the adiabatic bulk modulus to the isothermal bulk modulus of a perfect gas with f degrees of freedom is

A pole is floating in a liquid with 80 cm of its length immersed. It is pushed down a certain distance and then released. Time period of vertical oscillation is

The radius of a wheel is R and its radius of gyration about its axis passing through its centre and perpendicular to its plane is K. If the wheel is rolling without slipping, the ratio of its rotational kinetic energy to its translational kinetic energy is

An inclined track ends of in a circular loop of radius r. From what height on the track a particle should be released so that it completes the loop, assuming there is no friction?

Two loudspeakers L₁ and L₂, driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increase from zero and the detector at D records a series of maxima and minima. If the speed of sound is 330 ms⁻¹, then the frequency at which the first maximum is observed is

A stretched string of length 2m vibrates in 4 segments. The distance between consecutive nodes is

A body of mass 2 kg is placed on a horizontal surface having coefficienct of kinetic friction 0.4 and limiting coefficient of static friction 0.5. If horizontal force 2.5 N is applied on the body, the frictional force acting on the body will be (g = 10 ms⁻²)

The time taken by the current to rise to 0.63 of its maximum value in a DC circuit containing inductance (L) and resistance (R) depends on

24 identical cells, each of internal resistance 0.5 Ω, are arranged in a parallel combination of n rows, each row containing m cells in series. The combination is connected across a resistor of 3 Ω. In order to send maximum current through the resistor, we should have

If v is the molecular speed and l is the mean free path of molecule of a gas, then the collision frequency is

At t = 0, a transverse wave pulse in a wire is described by the function  where x and y are in metre. The function y(x, t) that describes this wave equation, if it is travelling in the positive x direction with a speed of 4.5 ms⁻¹ is

A playground merry-go-round is at rest, pivoted about a frictionless axis. A child of mass m runs along the path tangential to the rim with speed v and jumps on to merry-go-round. If R be the radius of merry-go-round and I is the moment of inertia, then the angular velocity of the merry-go-round and the child is