Archives

A satellite is in an elliptical orbit around a planet P.

A satellite is in an elliptical orbit around a planet P. It is observed that the velocity of the satellite when it is farthest from the planet is... View Article

Shown in the figure is a hollow ice cream cone

Shown in the figure is a hollow ice cream cone (it is open at the top). If its mass is M, the radius of its top, R and height, H, then its moment... View Article

For the given input voltage waveform

For the given input voltage waveform Vin(t), the output voltage waveform Vo(t), across the capacitor is correctly depicted by: Answer: (2) The... View Article

An electron, a doubly ionized helium ion (He⁺⁺) and a proton are having the same kinetic energy

An electron, a doubly ionized helium ion (He++) and a proton are having the same kinetic energy. The relation between their respective de-Broglie... View Article

A screw gauge has 50 divisions on its circular scale

A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one... View Article

Four point masses, each of mass m, are fixed at the corners of a square of side l.

Four point masses, each of mass m, are fixed at the corners of a square of side l. The square is rotating with angular frequency , about an axis... View Article

A thin rod of mass 0.9 kg and length 1 m is suspended

A thin rod of mass 0.9 kg and length 1 m is suspended, at rest, from one end so that it can freely oscillate in the vertical plane. A particle of... View Article

A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s

A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s. The body starts from rest and moves in a straight line. After 9... View Article

A prism of angle A = 1° has a refractive index μ = 1.5. A good estimate for the minimum angle of deviation (in degrees) is close to N / 10. Value of N is

Answer: 5 A = 1° δ = (μ – 1) A = (1.5 – 1) A = 0.5 × 1 = 5 / 10 = N / 10 so N = 5... View Article

The surface of a metal is illuminated alternately with photons of energies

The surface of a metal is illuminated alternately with photons of energies E1 = 4 eV and E2 = 2.5 eV respectively. The ratio of maximum speeds of... View Article

Nitrogen gas is at 300° C temperature. The temperature (in K) at which the rms speed of a H₂ molecule would be equal to the rms speed of a nitrogen molecule, is

Answer: 41 Vrms = √(3RT / M) √(3RT / 2) = √([3R * 573] / 28) T / 2 = 573 / 28 T = 41 K... View Article

The acceleration due to gravity on the earth’s surface

The acceleration due to gravity on the earth’s surface at the poles is g and angular velocity of the earth about the axis passing through... View Article

The quantities x = 1 / √μ₀ε₀, y = E / B and z = L / CR are defined where C – capacitance, R – Resistance, L – length, E – Electric field, B – magnetic field and ε₀, μ₀ – free space permittivity and permeability respectively. Then:

1) Only y and z have the same dimension 2) x, y and z have the same dimension 3) Only x and y have the same dimension 4) Only x and z have the... View Article

A galvanometer is used in the laboratory for detecting the null point in electrical experiments. If on passing a current of 6 mA it produces a deflection of 2°, its figure of merit is close to:

1) 6 × 10–3 A/div. 2) 3 × 10–3 A/div. 3) 666° A/div. 4) 333° A/div. Answer: (2) Figure of merit = I /... View Article

M	T	W	T	F	S	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30

Archives

A satellite is in an elliptical orbit around a planet P.

Shown in the figure is a hollow ice cream cone

For the given input voltage waveform

An electron, a doubly ionized helium ion (He⁺⁺) and a proton are having the same kinetic energy

A screw gauge has 50 divisions on its circular scale

Four point masses, each of mass m, are fixed at the corners of a square of side l.

A thin rod of mass 0.9 kg and length 1 m is suspended

A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s

A prism of angle A = 1° has a refractive index μ = 1.5. A good estimate for the minimum angle of deviation (in degrees) is close to N / 10. Value of N is

The surface of a metal is illuminated alternately with photons of energies

Nitrogen gas is at 300° C temperature. The temperature (in K) at which the rms speed of a H₂ molecule would be equal to the rms speed of a nitrogen molecule, is

The acceleration due to gravity on the earth’s surface

The quantities x = 1 / √μ₀ε₀, y = E / B and z = L / CR are defined where C – capacitance, R – Resistance, L – length, E – Electric field, B – magnetic field and ε₀, μ₀ – free space permittivity and permeability respectively. Then:

Two coherent sources of sound, S₁ and S₂, produce sound waves of the same wavelength

An iron rod of volume 10^–3m³ and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm.

A driver in a car, approaching a vertical wall

A radioactive nucleus decays by two different processes

A parallel plate capacitor has a plate of length l

In the circuit shown, charge on the 5μF capacitor is

A galvanometer is used in the laboratory for detecting the null point in electrical experiments. If on passing a current of 6 mA it produces a deflection of 2°, its figure of merit is close to:

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