TS EAMCET · Physics · Magnetic Properties of Matter
If the vertical component of earth's magnetic field is \(0.5 \times\) \(10^{-4} \mathrm{~T}\) at a point. When an aeroplane of wing span \(4 \mathrm{~m}\) is moving horizontally at this place at \(360 \mathrm{kmh}^{-1}\), then the motional emf formed across the ends of the wings is
- A \(20 \times 10^{-4} \mathrm{~V}\)
- B \(20 \times 10^{-2} \mathrm{~V}\)
- C \(20 \times 10^{-3} \mathrm{~V}\)
- D \(2 \times 10^{-4} \mathrm{~V}\)
Answer & Solution
Correct Answer
(C) \(20 \times 10^{-3} \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
Vertical component of earth Magnetic field, \(B_v=0.5 \times 10^{-4} \mathrm{~T}\) Aeroplane wing, \(\ell=4 \mathrm{~m}\). Velocity, \(\mathrm{v}=360 \mathrm{~km} / \mathrm{h}=\frac{360 \times 1000}{3600}=100 \mathrm{~m} / \mathrm{s}\) Emf is given by…
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
- A rigid body of mass and radius rolls without slipping on an inclined plane of inclination under gravity. Match the type of body Column I with magnitude of the force of friction Column II.
Column I Column II A) For ring I) B) For solid sphere II) C) For solid cylinder III) D) For hallow cylinder IV) TS EAMCET 2021 Medium - A moving body with a mass \(m_1\) and velocity \(u\) strikes a stationary body of mass \(m_2\). The masses \(m_1\) and \(m_2\) should be in the ratio \(\frac{m_1}{m_2}\), so as to decrease the velocity of the first body to \(\frac{2 u}{3}\) and giving a velocity of \(v\) to \(m_2\) assuming a perfectly elastic impact. Then, the ratio \(\frac{m_1}{m_2}\) isTS EAMCET 2020 Easy
- In the given circuit, a charge of \(+80 \mu \mathrm{C}\) is given to upper plate of a \(4 \mu \mathrm{F}\) capacitor. At steady state, the charge on the upper plate of the \(3 \mu \mathrm{F}\) capacitor is
TS EAMCET 2017 Medium - An ideal gas having initial pressure \(\mathrm{P}\), volume \(\mathrm{V}\) and temperature \(\mathrm{T}\) is allowed to expand adiabatically until its volume becomes \(4 \mathrm{~V}\), while its temperature falls to \(\frac{\mathrm{T}}{2}\). If the work done by the gas during the expansion is \(\alpha \mathrm{PV}\), the value of \(\alpha\) isTS EAMCET 2022 Easy
- The work done in displacing a particle from \(y=a\) to \(y=2 a\) by a force \(-\frac{\mathrm{K}}{y^2}\) acting along \(y\)-axis isTS EAMCET 2025 Medium
- A cyclist is riding with a speed of \(36 \mathrm{~km} / \mathrm{h}\). As he approaches a circular turn on the road of radius \(50 \mathrm{~m}\), he applies brakes and reduces his speed at the constant rate of \(0.5 \mathrm{~m} / \mathrm{s}\) every second. The magnitude and direction of the net acceleration of the cyclist on the circular turn respectively areTS EAMCET 2022 Hard
More PYQs from TS EAMCET
- A ball \(P\) of mass 0.5 kg moving with a velocity of \(10 \mathrm{~ms}^{-1}\) collides with another ball \(Q\) of mass 1 kg at rest. If the coefficient of restitution is 0.4 , the ratio of the velocities of the balls \(P\) and \(Q\) after the collision isTS EAMCET 2024 Easy
- White light is used to illuminate the two slits in a Young's double experiment. The observed central fringe isTS EAMCET 2021 Easy
- A uniform sphere A with radius R exerts a force F on a small particle B situated at a distance 2R from the centre of the sphere. A spherical portion of diameter R is cut from the sphere A as shown in the figure. If F′ is the new gravitational force between the remaining part of the sphere A and the particle B then the correct relation between F and F′.TS EAMCET 2022 Medium
- A composite slab is prepared with two different materials \(A\) and \(B\). The relation between their coefficient of thermal conductivity and thickness is given as \(K_A=\frac{K_B}{2}\) and \(X_A=2 X_B\), respectively. If the temperature of faces of \(A\) and \(B\) are \(75^{\circ} \mathrm{C}\) and \(50^{\circ} \mathrm{C}\) respectively, what will be the temperature of common surface?TS EAMCET 2020 Medium
- A person tries to broadcast with the same antenna both the signals at \(10^7 \mathrm{~Hz}\) and \(10^6 \mathrm{~Hz}\). If the receiver at some distance has to receive an equal strength for both the frequencies, then the broadcaster has to approximately increase the signal strength at \(10^6 \mathrm{~Hz}\) to \(10^7 \mathrm{~Hz}\) byTS EAMCET 2018 Easy
- Electrons ejected from the surface of a metal, when light of certain frequency is incident on it, are stopped fully by a retarding potential of 3 volts. Photoelectric effect in this metallic surface begins at a frequency \(6 \times 10^{14} \mathrm{~s}^{-1}\). The frequency of the incident light in \(\mathrm{s}^{-1}\) is : [Planck's constant \(=6.4 \times 10^{-34} \mathrm{Js}\), charge on the electron \(\left.=1.6 \times 10^{-19} \mathrm{C}\right]\)TS EAMCET 2004 Medium