Recent questions in Kinematics

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3 answers

A series LCR circuit is connected to an ac voltage source. When \(L\) is removed from the circuit, the phase difference between and voltage is \(\frac{\pi}{3}\). If instead \(C\) is removed form the circuit, the phase diffrence is again \(\frac{\pi}{3}\) between current and voltage. The power factor of the circuit is:

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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3 answers

The dissociation equilibrium of a gas \(\mathrm{AB}_{2}\) can be represented as: $$ 2 \mathrm{AB}_{2(g)} \leftrightharpoons 2 \mathrm{AB}_{(g)}+\mathrm{B}_{2(g)} $$ The degree of dissociation is \(x\) and is small compared to 1 . The expression relating the degree of dissociation \((x)\) with equilibrium constant \(K_{p}\) and total pressure \(P\) is

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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3 answers

An ideal gas expands in volume from \(1 \times 10^{-3} \mathrm{~m}^{3}\) to \(1 \times 10^{-2} \mathrm{~m}^{3}\) at \(300 \mathrm{~K}\) against a constant pressure of \(1 \times 10^{5} \mathrm{Nm}^{-2}\). The work done is

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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3 answers

A uniform chain of length 2m is kept on a table such that a length of 60cm hangs freely from the edge of the table. The total mass of the chain is 4kg. What is the work done in pulling the entire chain on the table?

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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2 answers

Two coils of self inductance 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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2 answers

A plano-convex lens of refractive index 1.5 and radius of curvature 30 cm is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to have a real image of the size of the object?

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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3 answers

A circular coil of 20 turns and radius \(10 \mathrm{~cm}\) is placed in a uniform magnetic Field of \(0.10\) T normal to the plane of the coil. If the current in the coil is \(5.0 \mathrm{~A}\), what is the

asked Dec 23, 2021 in Kinematics by kritika (90.1k points)

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3 answers

The unit of permittivity of free space, \(\varepsilon_{0}\), is

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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3 answers

Scent sprayer is based on

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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1 answer

The liquid metal used in thermometer is -

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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25 answers

Two bodies have their moments of inertia I and \(2 I\) respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular velocity will be in the ratio

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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3 answers

A body dropped from top of a tower fall through 40 m during the last two seconds of its fall. The height of tower is (g = 10 m/s2)

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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1 answer

Dimensions of resistance in an electrical circuit. in terms of dimension of mass \(M\), of length \(L\), of time \(T\) and of current \(I\), would be

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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8 answers

The electric Potential \(V\) at any Point \(o(x, y, z\) all in meters) in space is given by \(V=\) \(4 x^{2}\) volt. The electric field at the point \((1 \mathrm{~m}, 0.2 \mathrm{~m})\) in volt/meter is

asked Dec 22, 2021 in Kinematics by kritika (90.1k points)

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3 answers

A car accelerates from rest at a constant rate a for some time after which it decelerates at a constant speed \(\beta\) to come to rest. If the total time elapsed is ,, the maximum velocity acquired and total distance travelled by the car are given by

asked Dec 21, 2021 in Kinematics by kritika (90.1k points)

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3 answers

A thin circular ring of mass \(M\) and radius \(r\) is rotating about its axis with an angular speed \(\omega\). Two particles having mass \(\mathrm{m}\) each are now attached at diametrically opposite points. The angular speed of the ring will become

asked Dec 21, 2021 in Kinematics by kritika (90.1k points)

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29 answers

The magnetic susceptibility of a material of a rod is 499 . Permeability in vacuum is \(4 \pi \times 10^{-7} \mathrm{H} / \mathrm{m}\). Absolute permeability of the material of the rod is:

asked Dec 21, 2021 in Kinematics by kritika (90.1k points)

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3 answers

Sand is being dropped on a conveyor belt at the rate of M kg/s. The force necessary to keep the belt moving with a constant velocity of v m/s will be

asked Dec 21, 2021 in Kinematics by kritika (90.1k points)

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4 answers

A thin prism \(p_{1}\) with angle \(4^{\circ}\) and made from glass of refractive index \(1.54\) is combined with another prism \(p_{2}\) made from glass of refractive index \(1.92\) to produce dispersion without deviation. Then the angle of prism \(P_{2}\) is

asked Dec 21, 2021 in Kinematics by kritika (90.1k points)

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3 answers

A stone tied to a string of length \(L\) is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position and has a speed \(u\). The magnitude of the change in its velocity as it reaches a position where the string is horizontal is

asked Dec 20, 2021 in Kinematics by kritika (90.1k points)

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