Identify the correct output signal Y
Identify the correct output signal Y in the given combination of gates (as shown) for the given inputs A and... View Article
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A clock has a continuously moving second’s hand of 0.1 m length. The average acceleration of the tip of the hand (in units of ms–2) is of the order of
1) 10–3 2) 10–1 3) 10–2 4) 10–4 Answer: (1) a = v2 / R v = 2πR / 60... View Article
If the potential energy between two molecules is given by
If the potential energy between two molecules is given by U = – (A / r6) + (B / r12),... View Article
You are given that Mass of 73Li = 7.0160u
You are given that Mass of 73Li = 7.0160u, Mass of 42He = 4.0026u and Mass of 11H = 1.0079u.... View Article
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... 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... 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:... 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... 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... 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... 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... 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... 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... 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... 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 =... 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... 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... View Article
Two coherent sources of sound, S1 and S2, produce sound waves of the same wavelength
Two coherent sources of sound, S1 and S2, produce sound waves of the same wavelength, λ = 1 m, in... View Article
An iron rod of volume 10–3m3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm.
An iron rod of volume 10–3m3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm.... View Article
A driver in a car, approaching a vertical wall
A driver in a car, approaching a vertical wall, notices that the frequency of his car horn has changed from... View Article
