MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Physics

A stretched string fixed at both ends has 'rrl nodes, then the length of the string will be ______.

When light enters glass from vacuum, then the wavelength of llght ______.

A glass tube is open at both ends. A tuning fork of frequency f resonates with the air column inside the tube. Now the tube is placed vertically inside water so that half the length of the tube is filled with water. Now that air column inside the tube is in unison with another fork of frequency f, ____________.

A simple harmonic progressive wave is represented as y = 0.03 sin π(2t - 0.01x) m. At a given instant of time, the phase difference between two particles 25 m apart is ______.

If 'x', 'v' and 'a' denote the displacement, velocity and acceleration of a particle respectively executing SHM of periodic time t, then which one of the following does not change with time?

Find the wrong statement from the following about the equation of stationary wave given by Y = 0.04 cos(πx) sin(50 πt) m where t is in second. Then for the stationary wave.

Three masses 700 g, 500 g, and 400 g are suspended at the end of a spring and are in equilibrium as shown in figure. When the 700 g mass is removed, the system oscillates with a period of 3 seconds; when the 500 g mass is also removed, it will oscillate with a period of ____________.

In Balmer series, wavelength of first line is 'λ₁' and in Brackett series wavelength of first line is 'λ₂' then `lambda_1/lambda_2` is ______.

A stretched string of 1 m length and mass 5 x 10^-4 kg is having tension of 20 N. If it is plucked at 25 cm from one end then it will vibrate with frequency ____________.

The resistance of the potentiometer wire should ideally be ____________.

For the stationary wave,

y = 8sin(6.25πx) cos(96πt) metre, the distance between a node and the next antinode is ____________.

A container has a mixture of two gases, hydrogen, and oxygen at room temperature. Which one of the following statements is true, if V_H and V_O are the root mean square velocities of hydrogen and oxygen molecules respectively?

In a potentiometer experiment, when the galvanometer shows no deflection, then no current flows through ____________.

The potentiometer is more sensitive, when ______.

For stationary waves in the medium, ____________.

The resistivity of potentiometer wire is 40 × 10^-8 ohm - metre and its area of cross-section is 8 × 10^-6 m². If 0.2 ampere current is flowing through the wire, the potential gradient of the wire is ______.

A potentiometer is an ideal device for measuring potential difference because ______.

In the figure below, D and E respectively represent

The equation of S.H.M. of a particle of amplitude 4 cm performing 150 oscillations per minute starting with an initial phase 30° is ____________.

Select the WRONG statement: