The waves relevant to telecommunications are
(a) Microwave
(b) Ultraviolet
(c) Infrared
(d) Visible light
Answer:
Measons are found in
(a) Gamma rays
(b) Cosmic rays
(c) X-rays
(d) Laser beam
Answer:
The cathode ray particles originate in a discharge tube from the
(a) Source of high voltage
(b) Residual gas
(c) Anode
(d) Cathode
Answer:
The cause of fractional atomic weights of elements is the presence of
(a) Isotones
(b) Isobars
(c) Isotopes
(d) None
Answer:
Which one of the following is not a radioactive element?
(a) Radium
(b) Cadmium
(c) Uranium
(d) Thorium
Answer:
Which of the particles has similar mass to that of the electron?
(a) Neutrino
(b) Neutron
(c) Proton
(d) Positron
Answer:
Nuclear forces are mediated by
(a) Meson
(b) Electron
(c) Proton
(d) Neutron
Answer:
The north pole of the earth's magnet is near the geographical
(a) East
(b) West
(c) North
(d) South
Answer:
The split ring in motion is called
(a) Core
(b) Commutator
(c) Armature
(d) Rotor
Answer:
Optical fibres are mainly used for which of the following?
(a) Communication
(b) Weaving
(c) Musical instruments
(d) Food industry
Answer:
