Physics MCQS

211. Land and sea breezes are the result of?
(A) Radiation
(B) Conduction
C) Convection
(D) Temperature

212. In solid transfer of heat is called?
A) Conduction
(B) Convection
(C) Radiation
(D) Absorption

213. _ has more penetrating power.
A) Gamma rays
(B) An alpha particle
(C) A Beta particle
(D) None of the above

214. The particles emitted from a hot cathode surface are called?
(A) Negative ions
(B) Protons
C) Electrons
(D) Positive ions

215. The direction of induced emf in a circuit is in accordance with conservation of?
(A) Charge
(B) Momentum
C) Energy
(D) Mass

216. 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

217. System International unit of electric potential is?
(A) Ampere
(B) Electron volt
C) Volt
(D) Joule

218. A positive electric charge?
(A) Attracts other neutral charge
(B) Attracts other positive charge
C) Repels other positive charge
(D) Repels other neutral charge

219. A sky diver falls through the air at terminal velocity, The force of air resistance on him is :
A. Half His weight
B. Equal to his weight
C. Twice his weight
D. None of them

220. Water flows through a pipe. The diameter of the point B is larger than at point A. Where is the water pressure greatest?
A. Point A
B. Point B
C. Both A and B
D. None of them