A satellite is revolving around the earth with a kinetic energy E. The minimum
A satellite is revolving around the earth with a kinetic energy E. The minimum addition of kinetic energy needed to…
8 years ago
Questions
Imagine a new planet having the same density as that of earth but it is 3 times bigger
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the…
8 years ago
A gaussian sphere encloses an electric dipole within it. The total flux
A gaussian sphere encloses an electric dipole within it. The total flux across the sphere is Options (a) zero (b)…
8 years ago
A capacitor is used to store 24 watt hour of energy at 1200 volt.
A capacitor is used to store 24 watt hour of energy at 1200 volt. What should be the capacitance of…
8 years ago
The necessary condition in making of a junction transistor
The necessary condition in making of a junction transistor (E- emitter, B- base and C- collector) Options (a) E and…
8 years ago
An amplifier has a voltage gain Av=1000. The voltage gain in dB is
An amplifier has a voltage gain Av=1000. The voltage gain in dB is Options (a) 30 dB (b) 60 dB…
8 years ago
Electromagnetic induction is not used in
Electromagnetic induction is not used in Options (a) speedometer (b) transformer (c) AC generator (d) room heater Correct Answer: room…
8 years ago
A solenoid of length l metre has self inductance L henry. If number of turns
A solenoid of length l metre has self inductance L henry. If number of turns are doubled, its self inductance…
8 years ago
A light of wavelength 5000Å falls on a sensitive plate with photoelectric work
A light of wavelength 5000Å falls on a sensitive plate with photoelectric work function 1.90 eV. Kinetic energy of the…
8 years ago
Bragg’s law for X-rays is
Bragg's law for X-rays is Options (a) d sin θ = 2nλ (b) 2d sin θ = nλ (c) n…
8 years ago