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Tangent galvanometer is used to measure
A tangent galvanometer has a coil with 50 turns and radius equal to 4 cm. A current of 0.1 A is passing through it. The plane of the coil is set parallel to the earth's magnetic meridian. If the value of the earth's horizontal component of the magnetic field is $7 \times {10^{ - 5}}$tesla and${\mu _0} = 4\pi \times {10^{ - 7}}weber/amp \times m$, then the deflection in the galvanometer needle will be
A bar magnet has a magnetic moment equal to$5 \times {10^{ - 5}}weber \times m.$ 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 time period of a freely suspended magnet is 4 seconds. If it is broken in length into two equal parts and one part is suspended in the same way, then its time period will be
Which of the following statement is true about magnetic moments of atoms of different elements
The number of turns and radius of cross-section of the coil of a tangent galvanometer are doubled. The reduction factor K will be
A magnetic needle suspended by a silk thread is vibrating in the earth's magnetic field. If the temperature of the needle is increased by 500°C, then
The sensitivity of a tangent galvanometer is increased if
Two tangent galvanometers having coils of the same radius are connected in series. A current flowing in them produces deflections of 60° and 45° respectively. The ratio of the number of turns in the coils is
Using a bar magnet P, a vibration magnetometer has time period 2seconds. When a bar Q (identical to P in mass and size) is placed on top of P, the time period is unchanged. Which of the following statements is true

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