A cylindrical capacitors has charge Q and length L. If both the charge and length
A cylindrical capacitors has charge Q and length L. If both the charge and length of the capacitors are doubled,…
8 years ago
Physics
A capacitor having a capacity of 2 μF is charged to 200V and then the plates
A capacitor having a capacity of 2 μF is charged to 200V and then the plates of the capacitor are…
8 years ago
A tuned amplifier circuit is used to generate a carrier frequency of 2 MHz
A tuned amplifier circuit is used to generate a carrier frequency of 2 MHz for the amplitude modulation. The value…
8 years ago
A common emitter amplifier is designed with n-p-n transistor (α=0.99).
A common emitter amplifier is designed with n-p-n transistor (α=0.99). The input impedence is 1kΩ and load is 10kΩ. The…
8 years ago
A horizontal straight conductor kept in north-south direction falls under gravity. Then
A horizontal straight conductor kept in north-south direction falls under gravity. Then Options (a) No e.m.f. is induced along the…
8 years ago
A coil of N turns and mean cross-sectional area A is rotating with uniform angular
A coil of N turns and mean cross-sectional area A is rotating with uniform angular speed ω about an axis…
8 years ago
Electrons in a certain energy level n=n₁, can emit 3 spectral lines. When they
Electrons in a certain energy level n=n₁, can emit 3 spectral lines. When they are in another energy level, n=n₂.…
8 years ago
In a laser tube, all the photons
In a laser tube, all the photons Options (a) have same energy (b) have same wavelength (c) move in same…
8 years ago
An electron of mass m and a photon have same energy E. The ratio of de-Broglie
An electron of mass m and a photon have same energy E. The ratio of de-Broglie wavelengths associated with them…
8 years ago
Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing
Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing through them when a potential…
8 years ago