BITSAT 2022

A direct current of 6 A is superimposed on an alternating current I = 10 sin \(\omega\)t flowing through a wire. The effective value of the resulting current will be

In the circuit shown in the figure, the AC source gives a voltage V = 20 cos (2000t) neglecting source resistance, the voltmeter and ammeter reading will be

In a radioactive material the activity at time t1, is A1 and at a later time t2, it is A2. If the decay constant of the material is \(\lambda\), then

A particle of mass m is projected with velocity v at an angle \(\theta\) with the horizontal. At its highest point, it explodes into two pieces of equal mass, one of the piece continue to move on the original trajectory, then the velocity o...

In the arrangement shown in figure, when the switch S2 is open, the galvanometer, shows no deflection for \(l\) = 50 cm when the switch S2 is closed, the galvanometer shows no deflection for \(l\) = 0.416 m. The internal resistance (r) of 6...

The stopping potential (V0) versus frequency \(\nu\) of a graph for photoelectric effect in a metal. From the graph, the Plank's constant (h) is

The de-Broglie wavelength of an electron moving with a velocity \(\frac{c}{3}\) (c = 3 \(\times\) 108 m/s) is equal to the wavelength of photon. The ratio of the kinetic energies of electron and photon is

An electromagnetic wave is propagating along X-axis. At x = 1 cm and t = 18s, its electric vector |E| = 8 V/m, then the magnitude of its magnetic vector is

Which one of the following graphs represents the variation of electric potential with distance r from the centre of a non-conducting charged sphere of radius R?

A capillary tube is attached horizontally to a constant heat arrangement. If the radius of the capillary tube is increased by 25%, then the rate of flow of liquid will change nearly by

What will be the acceleration due to gravity at a depth d, where g is acceleration due to gravity on the surface of earth?

A monoatomic gas of molar mass m is kept in a insulated container. Container is moving with velocity v. If the container is suddenly stopped, then the change in the temperature of the gas is

One mole of an ideal diatomic gas undergoes a process as shown in the figure. The molar specific heat of the gas in the process is

If the B - H curves of two samples of X and Y of iron are as shown below, then which one of the following statement is correct?

A projectile is projected with the velocity of \((3\widehat i + 4\widehat j)\) m/s. The horizontal range of the projectile will be

An electric current I enters and leaves a uniform circular wire of radius r through diametrically opposite points. A charged particle q moves along the axis of circular wire passes through its centre at speed v. The magnetic force on the pa...

A mosquito O is sitting infront of a glass rod having spherical end of radius of curvature 40 cm. The image would be formed at

An achromatic convergent doublet of two lenses in contact has a power of +5 D. The power of converging lens is +6 D. The ratio of the dispersive power of the convergent and divergent lenses is

Four holes of radius 5 cm are cut from a thin square plate of 20 cm and mass 1 kg. The moment of inertia of the remaining portion about Z-axis is

A solid sphere of 80 kg and radius 15 m moving in a space becomes a circular disc of radius 20 m in 1 h. The rate of change of moment of Inertia in this process is .......

For an insulator, the forbidden energy gap is

In the circuit shown assume the diode to be ideal. When Vi increases from \(-\)2V to 6V, the change in current is (in mA)

In the following circuit the equivalent resistance between X and Y is ......... \(\Omega\)

A transistor is connected in common-emitter (CE) configuration. The collector supply is 8V and the voltage drop across a resistor is 500 \(\Omega\) in the collector circuit is 0.6 V. IF the current gain factor \(\alpha\) is 0.96, find the b...

In a young's double slit arrangement fringes are produced using light of wavelength 4000 \(\mathop A\limits^o\). One slit is covered by a thin plate of glass of refractive index 1.4 and the other with another glass plate of same thickness ...

In a resonance coloum first and second resonance are obtained at depths 24 cm and 78 cm the third resonance will be obtained at depth.

A submarine A travelling at 17 m/s is being chased along the line of its velocity by another submarine B travelling at 34 m/s. B sends a sonar signal of 600 Hz to detect A and receives a reflected sound of frequency \(\nu\). The of \(\nu\) ...

Transverse waves of the same frequency are generated in two steel wires A and B. The diameter of A is twice that of B and the tension in A is half that in B. The ratio of the velocities of the waves in A and B is

In the diagram shown below, both the strings AB and CD are made of same material and have same cross-section. The pulleys are light and fictionless. If the speed of wave in string AB is v1 and in CD is v2, then \({{{v_1}} \over {{v_2}}}\) i...

A machine gun fires 300 bullets per min if the mass of each bullet is 10 g and the velocity of the bullets is 600 ms\(-\)1, the power (in kW) of the gun is