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Which of the following statement(s) is/are correct

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Which of the following statement (s) is/are correct with respect of magnetic lines of

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Which of the following statement(s) is/are

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Earth’s Magnetic FieldThe magnetic field lines of the earth resemble that of a hypothetical magnetic dipole located at the centre of the earth. The axis of the dipole is presently tilted by approximately 11.3° with respect to the axis of rotation of the earth.The pole near the geographic north pole of the earth is called the north magnetic pole and the pole near the geographic south pole is called south magnetic pole.The angle of dip at a certain place, where the horizontal and vertical components of the earth’s magnetic field are equal,

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Which of the following is not an application of eddy

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Assertion: If a straight wire is moved in a magnetic field, no emf will be induced across its two ends as the circuit is not closed. Reason: Since, the circuit is not closed, induced current will be

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Assertion: Coefficient of self-induction of an inductor depends upon the rate of change of current passing through it.Reason: From `e=L(di)/(dt)`We can see that, `L=e/((di)/(dt))` or `L prop

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. induction furnace is used to

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Eddy CurrentCoil is wound over metallic core is helpful in reducing eddy currents in the metallic cores of transformers, electric motors, induction furnaces and other such devices (as shown below). Eddy currents are undesirable since they heat up the core and dissipate electrical energy in the form of heat. These currents are minimised by using laminations of metal to make a metal core. induction furnace can be utilised to

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Alternating current is transmitted to distant

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The selectivity of a series L-C-R `AC` circuit is large,

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Assertion: In series, L-C-R circuit, voltage across capacitor is always less than the applied voltage. Reason: In series L-C-R circuit,

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Assertion: `X_C < X_L, phi` is positive and the circuit is predominantly capacitive. The current in the circuit leads the source voltage. Reason: If `X_C < X_L, phi` is negative and the circuit is predominantly inductive. The current in the circuit lags the source

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Assertion: A capacitor of suitable capacitance can be used in an AC circuit in place of the choke coil. Reason: A capacitor blocks DC and allows AC

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Find the position, nature,and magnification of the image. An object is placed at 10

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Suppose while sitting in a parked car, you notice a jogger approaching towards you in the side view mirror of R = 2 m. If the jogger is running at a speed of 5 m s–1, how fast the image of the jogger appear to move when the jogger is

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Light from a point source in air falls on a spherical glass surface (n = 1.5 and radius of curvature = 20 cm). The distance of the light source from the glass surface is 100 cm. At what position the image is

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A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm. Give the location of the image and the magnification. Describe what happens as the needle is moved farther from the

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Fig (a) and (b) show refraction of a ray in air incident at 60° with the normal to a glass-air and water-air interface, respectively. Predict the angle of refraction in glass when the angle of incidence in water is 45º with the normal to a water-glass interface [Fig.

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Use the mirror equation to deduce that: the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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