(A) Conduction
(B) Convection
(C) Radiation
(D) Absorption
___ has more penetrating power.
(A) Gamma rays
(B) An alpha particle
(C) A Beta particle
(D) None of the above
The particles emitted from a hot cathode surface are called?
(A) Negative ions
(B) Protons
(C) Electrons
(D) Positive ions
The direction of induced emf in a circuit is in accordance with conservation of?
(A) Charge
(B) Momentum
(C) Energy
(D) Mass
The combined resistance of two electrical resistors connected in series is 8 Ω. Their combined resistance in a parallel arrangement will be?
(A) 2Ω
(B) 4Ω
(C) 8Ω
(D) 12Ω
System International unit of electric potential is?
(A) Ampere
(B) Electron volt
(C) Volt
(D) Joule
A positive electric charge?
(A) Attracts other neutral charge
(B) Attracts other positive charge
(C) Repels other positive charge
(D) Repels other neutral charge
During refraction of light the quality of ___ is not changed.
(A) Its frequency
(B) Its wavelength
(C) Its speed
(D) Its direction