Class 12th

A square loop of side 2a and carrying current I is kept in xz plane with its centre at origin. A long wire carrying the same current I is placed parallel to z-axis and passing through point (0, b, 0), (b >> a). The magnitude of torque on the loop about z-axis will be

What are the functional groups present in the structure of maltose?

A double convex lens has power P and same radii of curvature R of both the surfaces. The radius of curvature of a surface of a plano-convex lens made of the same material with power 1.5P is

The electric field of a plane electromagnetic wave is given by E⃗ = E₀(x̂ + ŷ)sin(kz – ωt)
Its magnetic field will be given by:

The IUPAC name of the following compound is:

A series L – R circuit is connected to a battery of emf V. If the circuit is switched on at t = o, then the time at which the energy stored in the inductor reaches (1/n) times of its maximum value, is :

Consider the force F on a charge ' q ' due to a uniformly charged spherical shell of radius R carrying charge Q distributed uniformly over it. Which one of the following statements is true for F, if ' q ' is placed at distance r from the centre of the shell?

A circuit to verify Ohm's law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit:

The number of isomers possible for [Pt(en)(NO2)2] is:

Given the masses of various atomic particles m? = 1.0072u, m? = 1.0087u, m? = 0.000548u, m? = 0, m? = 2.0141u, where p = proton, n = neutron, e = electron, v = antineutrino and d = deuteron. Which of the following process is allowed by momentum and energy conservation?