(a) Lumen/watt
(b) Lux
(c) Watt
(d) Lumen
Answer:
The head mirror used by E.N.T. doctors is
(a) Planoconvex
(b) Plane
(c) Concave
(d) Convex
Answer:
The resistance of an ideal ammeter is
(a) Infinite
(b) Very high
(c) Very low
(d) Zero
Answer:
The electrolyte in a car battery is
(a) Distilled water
(b) Nitric acid
(c) Hydrochloric acid
(d) Sulphuric acid
Answer:
A thermoelectric refrigerator works on
(a) Seebeck effect
(b) Peltier effect
(c) Jule effect
(d) None of these
Answer:
The wire having a red plastic covering is a
(a) Earth wire
(b) Line wire
(c) Neutral wire
(d) None of these
Answer:
Fleming's right hand rule is used to find the direction of the
(a) Actual current
(b) Induced current
(c) Direct current
(d) Alternate current
Answer:
Instrument used to store the electric charge is known as
(a) Transistor
(b) Transformer
(c) Inductor
(d) Capacitor
Answer:
In a nuclear reactor, cadmium rods are used to
(a) Produce neutrons
(b) Absorb neutrons
(c) Speed up neutrons
(d) Slow down neutrons
Answer:
Nuclear forces are
(a) Long range
(b) Spin dependent
(c) Charge dependent
(d) None of these
Answer: