Embibe Experts Solutions for Chapter: Matter and Magnetism, Exercise 1: Exercise-1

The vertical component of earth magnetic field is zero at or the earth's magnetic field always has a vertical component except at the:

If any values of current gives a $45°$ deflection in property arranged tangent galvanometer. If current becomes $\frac{1}{\sqrt{3}}$ of its initial value, then deflection in it:

$\sqrt{3}$ ampere current produces $30°$ deflection in tangent galvanometer, than $3$ ampere current produces a deflection:

At a certain place, the horizontal component $B_0$ and the vertical component $V_0$ of the earth's magnetic field are equal in magnitude. The total intensity at the place will be

The magnetic needle of a tangent galvanometer is deflected at an angle $30°$ due to a magnet. The horizontal component of earth's magnetic field $0.34\times {10}^{-4} \mathrm{T}$ is along the plane of the coil. The magnetic field of coil is:

Which of the following demonstrated that earth has a magnetic fied:

A bar magnet has a magnetic moment equal to $5\times {10}^{-5}\mathrm{A}-{\mathrm{m}}^2$. It is suspended in a magnetic field which has a magnetic induction $B$ equal to $8\pi \times {10}^{-4}$ Tesla. The magnet vibrates with a period of vibration equal to $15 \sec$. The moment of inertia of the magnet is

The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is $2\mathrm{s}$.the magnet is cut along its length into three equal part and three parts are then placed on each other with their like poles together. The  time period of this combination will be: