NEB Question Browser

Define amplitude.

What is thermoelectric effect?

Self inductance of a coil varies as:

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?

If a uniform spring is cut in half, what is the force constant of each half? How would the frequency of half spring differ from that using the same mass and entire spring?

A horizontal pipe of 25 cm² cross section carries water at a velocity of 3 m/s. The pipe feeds into a smaller pipe of cross section 15 cm². Determine the pressure change that occurs on going from the larger diameter pipe to the smaller pipe.

State first law of thermodynamics.

The given figure represents a wavefront AB moving in air and incident on a plane glass surface XY. Its position after refraction through the glass slab is CD. The refractive index of glass with respect to air will be equal to:

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

P-waves are:

Apply the first law of thermodynamics to relate the two specific heat capacities of a gas i.e. Cₚ − Cᵥ = R

Calculate the acceleration of the motion.

Define coefficient of viscosity.

How can you use this method to determine the coefficient of viscosity of a liquid? Explain

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

Define θₙ and θᵢ.