Attenuation of a signal is
Attenuation is the loss of strength of signal while propagating.
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In Bohr model of hydrogen atom, radiation is emitted when the electron
Radiation is emitted when an electron jumps from higher energy state to lower energy state.
According to Bohr model of hydrogen atom, the radius of stationary orbit characterized by the principal quantum number n is proportional to
Radius of the orbit is proportional to n2
In Rutherford’s experiment, a thin gold foil was bombarded with alpha particles. According to Thomson’s ‘plum-pudding’ model of the atom, what should have happened?
In Rutherford’s experiment, a thin gold foil was bombarded with alpha particles. According to Thomson’s ‘plum-pudding’ model of the atom,... View Article
Acceptor circuit is?
The series resonance circuit is known as acceptor circuit. The impedance of the acceptor circuit is minimum but the voltage... View Article
The dipole moment per unit volume is called__________
Answer: The dipole moment per unit volume is called polarization. Dielectric Polarisation The alignment of the dipole moments of the... View Article
A pure resistance R, pure capacitance C and pure inductance L are connected in series and the impedance of the circuit at resonance is Zo. If they are connected in parallel to each other, the maximum impedance at resonance will be:
At resonance for series LCR circuit, minimum impedance is Zo=R and for resonant parallel RCL circuit, the maximum impedance is... View Article
In a series RCL circuit at resonance the applied ac voltage is 220 V. The potential drop across the inductance is 110V, what is the potential drop across the capacitor?
At resonance, the potential drop across the capacitance is equal and opposite to that of inductance.
What happens to the power in a FM signal as the modulation index increases?
Power remains constant irrespective of the modulation index in case of F.M. signal.
γ (Gamma) rays are_________
Answer: γ (Gamma) rays are electromagnetic waves. Gamma Radiation Gamma rays or gamma radiation is a stream of the high-energy electromagnetic... View Article
Which one of the following statements about the atomic nucleus is accurate? a)The nucleus is held together mostly by the electrical and gravitational forces b) Large nuclei are denser than light nuclei c) All nuclei have nearly the same density d) Smaller nuclei are denser than larger nuclei
Option (c) All nuclei have nearly the same density. Most nuclei are approximately spherical. The average radius of a nucleus... View Article
We know that the Rutherford model of the atom is superior to the Thompson model because when alpha particles are scattered from atoms:
We know that the Rutherford model of the atom is superior to the Thompson model because when alpha particles are... View Article
In scattering, the impact parameter b is defined as the:
It is the minimum distance to which the alpha particle would have approached the nucleus, had there been no forces... View Article
Choose the correct answer from the following
If cells are joined in parallel, they have _______. same current same potential difference same resistance same power Answer: 2.... View Article
The process of impressing any information by changing the original signal is called
The process of impressing information by changing the original signal is called ‘modulation’, and it is done in a variety... View Article
Power dissipation is maximum in
Power dissipation is maximum at option (c) Pure resistive circuit Explanation In an AC circuit, the power dissipated in the circuit... View Article
Resonant circuits are used in tuning of
Resonant circuits are used in tuning of a radio and a TV set.
When the oscillations produced are of constant amplitude. The are called
When the oscillations produced are of constant amplitude. They are called undamped oscillations.
Choose the right option for Rutherford’s Experiment
Choose the correct option for the following: The alpha particles used in Rutherford’s experiment are positively charged particles, in fact... View Article
The alpha particle scattering experiment was carried out by:
The alpha particle scattering experiment was carried out by Rutherford.
