Test: BITSAT Past Year Paper- 2019 - JEE MCQ

Twelve resistors each of resistance 16 Ω are connected in the circuit as shown. The net resistance between A and B is

The time period of a satellite of earth is 5 hours.If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become

Two trains are moving towards each other with speeds of 20 m/s and 15 m/s relative to the ground. The first train sounds a whistle of frequency 600 Hz. The frequency of the whistle heard by a passenger in the second train before the train meets, is (the speed of sound in air is 340 m/s)

You are asked to design a shaving mirror assuming that a person keeps it 10 cm from his face and views the magnified image of the face at the closest comfortable distance of 25 cm. The radius of curvature of the mirror would then be :

A block is kept on a frictionless inclined surface with angle of inclination ‘α’. The incline is given an acceleration ‘a’ to keep the block stationary.
Then ‘a’  is equal to

With the increase in temperature, the angle of contact

Forward biasing is that in which applied voltage

Number of significant figures in expression 

The ratio of the specific heats C_p/C_v = γ in terms of degrees of freedom (n) is given by

A stone is thrown with a velocity u making an angle θ with the horizontal. The horizontal distance covered by its fall to ground is maximum when the angle θ is equal to

A ball of mass 150 g, moving with an acceleration 20 m/s², is hit by a force, which acts on it for 0.1 sec. The impulsive force is

A man drags a block through 10 m on rough surface (µ = 0.5). A force of √3 kN acting at 30° to the horizontal. The work done by applied force is

A force of  acts on a body for 4 second, produces a displacement of  The power used is

The Earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the Earth. The escape velocity of a body from this platform is fv, where v is its escape velocity from the surface of the Earth. The value of f is

Kepler ’s second law regarding constancy of areal velocity of a planet is a consequence of the law of conservation of

Water is flowing through a horizonal tube having cross-sectional areas of its two ends being A and A' such that the ratio A/A' is 5. If the pressure difference of water between the two ends is 3 × 10⁵ N m^–2, the velocity of water with which it enters the tube will be (neglect gravity effects)

A thermodynamic system is taken from state A to B along ACB and is brought back to A along BDA  as shown in the PV diagram. The net work done during the complete cycle is given by the area

A boat crosses a river from port A to port B, which are just on the opposite side. The speed of the water is V_w and that of boat is V_B relative to still water. Assume V_w = 2V_w. What is the time taken by the boat, if it has to cross the river directly on the AB line [D = width of the river]

Two springs, of force constants k₁ and k₂ are connected to a mass m as shown. The frequency of oscillation of the mass is f. If both k₁ and k₂ are made four times their original values, the frequency of oscillation becomes

When a potential difference V is applied across a conductor at a temperature T, the drift velocity of electrons is proportional to

The amplitude of a damped oscillator becomes (1/3)^rd in 2 secon ds. If its amplitude after 6 seconds is 1/n times the original amplitude, the value of n is 

The angular speed of the electron in the n^th orbit of Bohr hydrogen atom is

In the given figure, the charge on 3 µF capacitor is

Two bodies A and B are placed in an evacuated vessel maintained at a temperature of 27ºC. The temperature of A is 327ºC and that of B is 227ºC.
The ratio of heat loss from A and B is about

If a rigid body is rotating about an axis with a constant velocity, then

The fundamental frequency of an open organ pipe is 300 Hz. The first overtone of this pipe has same  frequency as first overtone of a closed organ pipe. If speed of sound is 330 m/s, then the length of closed organ pipe is

In Young's experiment, the distance between the slits is reduced to half and the distance between the slit and screen is doubled, then the fringe width