GATE - Physics Mock Tests

A ball is thrown vertically upward with an initial velocity of 20 m/s. Taking g = 10 m/s², the time taken by the ball to return to the point of projection is: (Take upward direction as positive)

Two identical small beads of mass m and charge q are threaded on a frictionless horizontal circular hoop of radius R. The beads are released from rest at diametrically opposite positions. Find the square of the angular frequency ω² of small oscillations about the equilibrium position.

A parallel plate capacitor has capacitance C in air. If a dielectric slab of thickness t = 3d/4 and dielectric constant K = 3 is inserted between the plates (where d is plate separation), the new capacitance is:

The photoelectric effect is based on the principle of conservation of:

In a common emitter amplifier, the input resistance is 2 kΩ and the load resistance is 5 kΩ. If the current gain β = 20 and the base current changes by 10 μA, the change in output voltage is:

A thermodynamic process is described by the equation PV² = constant. The process is:

The mass defect of a nucleus is 0.0304 amu. Its binding energy is:

A transformer steps up voltage from 220 V to 4400 V. If the primary has 100 turns, the number of turns in the secondary is: