TS EAMCET · Physics · Magnetic Properties of Matter
A deflection magnetometer is adjusted and a magnet of magnetic moment \(M\) is placed on it in the usual manner and the observed deflection is \(\theta\). The period of oscillation of the needle before settling of the deflection is \(T\). When the magnet is removed, the period of oscillation of the needle is \(T_0\) before settling to \(0^{\circ}-0^{\circ}\). If the earth's induced magnetic field is \(B_H\), the relation between \(T\) and \(T_0\) is
- A \(T^2=T_0^2 \cos \theta\)
- B \(T^2=\frac{T_0^2}{\cos \theta}\)
- C \(T=T_0 \cos \theta\)
- D \(T=\frac{T_0}{\cos \theta}\)
Answer & Solution
Correct Answer
(A) \(T^2=T_0^2 \cos \theta\)
Step-by-step Solution
Detailed explanation
In deflection magnetometer, field due to magnet \(F\) and horizontal component \(B_H\) of earth's field are perpendicular to each other. \(\therefore\) Net field is \(\sqrt{F^2+B_H^2}\) So the time period \(T=2 \pi \sqrt{\frac{1}{M \sqrt{F^2+B_H}}}\) When magnet is removed…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The dimensional formula of \(\frac{1}{2} \mu_0 H^2\) ( \(\mu=\) permeability of free space and \(H=\) magnetic field intensity) isTS EAMCET 2011 Easy
- The power of a thin convex lens placed in air is +4 D . The refractive index of the material of the convex lens is \(\frac{3}{2}\). If this convex lens is immersed in a liquid of refractive index \(\frac{5}{3}\), thenTS EAMCET 2024 Hard
- A large storage tank, open to the atmosphere at top and filled with water, develops a small hole in its side at a point below the water level. If the rate of flow from the hole is , then the diameter of the hole is [Take ]TS EAMCET 2022 Medium
- A wire of length \(l\) is bent into a circular loop of radius \(R\) and carries a current \(I\). The magnetic field at the centre of the loop is \(B\). The same wire is now bent into a double loop of equal radii. If both loops carry the same current \(I\) and it is in the same direction, the magnetic field at the centre of the double loop will beTS EAMCET 2009 Easy
- A resistance of is connected to an alternating current source of . If the frequency of the A.C. source is , then the time taken by the current to change from its maximum value to the R.M.S. value isTS EAMCET 2021 Easy
- A particle of mass is executing simple harmonic motion of amplitude . When the particle passes through the mean position, its kinetic energy is . If the initial phase is the equation of its motion is (Assume, as the position of the particle at time )TS EAMCET 2019 Medium
More PYQs from TS EAMCET
- The total internal energy of 4 moles of a diatomic gas at a temperature of \(27^{\circ} \mathrm{C}\) is (Universal gas constant \(=8.31 \mathrm{~J}\) \(\mathrm{mol}^{-1} \mathrm{~K}^{-1}\) )TS EAMCET 2024 Easy
- A whistle of frequency \(660 \mathrm{~Hz}\) moves in a circle of radius \(1 \mathrm{~m}\) at an angular speed of \(10 \mathrm{rad} / \mathrm{s}\). The highest frequency heard by a listener at a long distance and at rest with respect to the center of the circle is (Let speed of sound \(=340 \mathrm{~m} / \mathrm{s}\).)TS EAMCET 2019 Hard
- An object is thrown vertically upward with a speed of \(30 \mathrm{~m} / \mathrm{s}\). The velocity of the object half-a-second before it reaches the maximum height isTS EAMCET 2017 Easy
- A body of mass \(4 \mathrm{~kg}\) is moving with momentum of \(8 \mathrm{~kg} \mathrm{~ms}^{-1}\). A force of \(0.2 \mathrm{~N}\) acts on it in the direction of motion of the body for 10 seconds. The increase in kinetic energy in joules isTS EAMCET 2002 Easy
- A sinusoidal voltage with a frequency of is applied to a series circuit with a resistance of , inductance of and a capacitance of . The magnitude of impedance of the circuit is close toTS EAMCET 2019 Medium
- If a planet of mass \(6.4 \times 10^{23} \mathrm{~kg}\) can be compressed into a sphere such that the escape velocity from its surface is \(8 \times 10^4 \mathrm{~m} / \mathrm{s}\), then what showld be the radius of the sphere? (Gravitational constant, \(G=6.6 \times 10^{11} \mathrm{Nm}^2 \mathrm{~kg}^2\) )TS EAMCET 2019 Easy