Class 11 - Physics Mock Tests

A long solenoid of radius R has n turns per unit length and carries current I. A small circular coil of N turns and area A is placed inside the solenoid with its axis along the solenoid axis. The mutual inductance between the solenoid and the coil is:

A long straight wire carries a current of 10 A. The magnetic field at a distance of 5 cm from the wire is:

A uniform chain of mass M and length L lies on a smooth horizontal table with a fraction 1/n of its length hanging over the edge. The work done in pulling the hanging part onto the table is:

A bar magnet is moved towards a stationary coil with constant speed. Which of the following statements is correct?

A photon of wavelength 400 nm has energy approximately: (h = 6.63 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s)

In an LCR series circuit, L = 10 mH, C = 1 μF, and R = 10 Ω. The resonant frequency of the circuit is:

In a photoelectric effect experiment, the work function of a metal is 2.0 eV. The threshold frequency is: (h = 6.63 × 10⁻³⁴ J·s, 1 eV = 1.6 × 10⁻¹⁹ J)

Which of the following is an ohmic resistor?