Q.1 SONAR is based on the principle of
A). Echo B). Resonance
C). Reverbertion D). None of these
Q.2 Electron Microscope was invented by
A). Knoll and Ruska B).Robert Koch
C). Leeuwenhock D).CPS Wanson
Q.3 Optical fibres are based on the phenomenon of
A). Dispersion B). Total internal reflection
C). Interference D). Diffraction
Q.4 Potential is measured in
A). watt B). joule
C). joule/coulomb D). newton-second
Q.5 An instrument used to measure humidity is
A). Anemometer B). Hygrometer
C). Thermometer D). Pyrheliometer
Q.6 For measuring very high temperature, we use
A). Mercury thermometer B). Thermoelectric pyrometer
C). Platinum resistance thermometer D). None of these
Q.7 SI unit of magnetic flux is
A). weber B). weber-m2
C). weber/m D).weber/m2
Q.8 What type of mirror is used in a view finding mirror of a vehicle
A). Paraboloidal mirror B). Convex mirror
C). Plane mirror D). Concave mirror
Q.9 We receive sunlight on earth surface. What type of light beams are these?
A). Diverging B). Random
C). Parallel D). Converging
Q.10 Which color of light has the highest velocity through vacuum
A). Red B). Blue
C). Green D). All of these
Answers:
1)A 2)A 3)B 4)C 5)B 6)B 7)A 8)B 9)C 10)D
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