NEET - Physics Mock Tests

An infinite series of resistors is connected as follows: each node is connected to the next by a resistor of R ohms, and each node is connected to ground by a resistor of R ohms. The equivalent resistance between the input terminals is:

A circular platform of moment of inertia I₀ rotates freely with angular speed ω₀. A person of mass m, initially at the centre, walks to the edge at distance r from the axis. The final angular speed of the platform is:

The de Broglie wavelength of an electron accelerated through potential V is proportional to:

Two point charges +q and -q are placed at vertices of an equilateral triangle of side a. A third charge +Q is placed at the midpoint of the side joining the two charges. The magnitude of the force on +Q is:

A prism of refractive index √2 has a refracting angle of 60°. The minimum angle of deviation δₘ is:

A transformer is used to step up voltage from 220 V to 2200 V. If the primary coil has 100 turns, the number of turns in the secondary coil is:

The boundary condition at the surface of a perfect conductor in electrostatics is that the electric field:

A p-n junction diode is in forward bias. Which of the following statements is correct?