List of top Physics Questions asked in VITEEE

The given electrical network is equivalent to:

A large number of liquid drops each of radius \( r \) coalesce to form a single drop of radius \( R \). The energy released in the process is converted into kinetic energy of the big drop \( M \) is given by (given, surface tension of liquid \( \sigma \)):

A ray PQ incident on the refracting face BC is refracted in the prism BA as shown in the figure and emerges from the other refracting face AC as RS such that \( \angle AQ = \angle RS \). If the angle of prism \( A = 60^\circ \) and the refractive index of the material of prism is \( \sqrt{3} \), then the angle of deviation of the ray is:

The principle of conservation of linear momentum can be strictly applied during a collision between two particles provided the time of impact:

The current sensitivity of a moving coil galvanometer depends on:

A square loop, carrying a steady current \( I \), is placed in a horizontal plane near a long straight conductor carrying a steady current \( I \), at a distance \( d \) from the conductor as shown in figure. The loop will experience:

An alternating voltage of 220 V, 50 Hz frequency is applied across a capacitor of capacitance 2 μF. The impedance of the circuit is:

The length of elastic string, obeying Hooke’s law, is \( \ell_1 \) metres when the tension 4N and \( \ell_2 \) metres when the tension is 5N. The length in metres when the tension is 9N is:

The temperature of equal masses of three different liquids A, B, and C are 12°C, 19°C, and 28°C respectively. The temperature when A and B are mixed is 16°C and when B and C are mixed is 23°C. The temperature when A and C are mixed is:

The molar specific heats of an ideal gas at constant pressure and volume are denoted by \( C_p \) and \( C_v \), respectively. If \( \gamma = \dfrac{C_p}{C_v} \) and \( R \) is the universal gas constant, then \( C_v \) is equal to:

In Young's double slit experiment, intensity at a point is \( \dfrac{1}{4} \) of the maximum intensity. Angular position of this point is (separation between slits is \( d \)):

The I-V characteristic of a diode is shown in the figure. The ratio of forward to reverse bias resistance is:

The horizontal component of the earth’s magnetic field is \( 3.6 \times 10^{-5} \) tesla where the dip angle is 60°. The magnitude of the earth’s magnetic field is:

The velocity of water in a river is 18 km/hr near the surface. If the river is 5 m deep, find the shearing stress between the horizontal layers of water. The coefficient of viscosity of water is \( 10^{-2} \) poise:

The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value of electric field strength is:

Two batteries of emf 4 V and 8 V with internal resistance 1 \( \Omega \) and 2 \( \Omega \) are connected in a circuit with a resistance of 9 \( \Omega \) as shown in the figure. The current and potential difference between the points P and Q are:

In a common emitter transistor amplifier \( \beta = 60 \), \( R_o = 5000 \, \Omega \) and internal resistance of a transistor is 500 \( \Omega \). The voltage amplification of amplifier will be:

A machine gun has a mass 5 kg. It fires 50 gram bullets at the rate of 30 bullets per minute at a speed of 400 m/s. What force is required to keep the gun in position?

Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first excited state. The ratio of the wavelength \( \lambda_1 : \lambda_2 \) emitted in the two cases is:

The activity of a radioactive sample is measured as 9750 counts per minute at \( t = 0 \) and as 975 counts per minute at \( t = 5 \) minutes. The decay constant is approximately:

Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to equation \( I = I_0 \sin \omega t \), where \( I_0 = 10A \) and \( \omega = 100\pi \, \text{radian/sec} \). The maximum value of e.m.f. in the second coil is:

The equivalent capacitance between a and b for the combination of capacitors shown in figure where all capacitances are in microfarad is:

A metallic sphere is placed in a uniform electric field. The line of force follow the path (s) shown in the figure as:

The magnetic field at a point due to a current carrying conductor is directly proportional to:

Which of the following is the correct lens formula?