NEB Question Browser

Define θₙ and θᵢ.

What will be the effect on θᵢ if we shift the cold junction to −10°C?

Also determine the direction of the magnetic field in this case.

Define harmonics and overtone

If the tension of the string is increased 4 times, what will be the frequency of this mode?

Write down the Newton’s formula for the velocity of sound in a gas medium with its discrepancy

Describe the formation of potential barrier.

When the p-n junction diode is forward biased, a large current flows, why?

Compare β-particles and γ-rays in terms of their mass, charge, ionizing power and penetrating power.

Define decay constant.

Calculate the moment of inertia of a thin uniform rod about an axis passing through its centre and perpendicular to its length.

Define radius of gyration.

Obtain the efficiency of a heat engine.

If the source of sound and the listener move in the same direction with same velocity equal to half the velocity of sound, what is the change in frequency?

Work function of metal in eV

The region of initiation of seismic energy within the earth is called:

A physics teacher stands on a freely rotating platform. He holds a dumbbell in each hand of his outstretched arms while a student gives him a push until his angular velocity reaches 1.5 rad/s. When the freely spinning teacher pulls his hands in close to his body, his angular velocity increases to 5.0 rad/s. What is the ratio of his final kinetic energy to initial kinetic energy?

Define amplitude.

Define coefficient of viscosity.

Threshold frequency