Instrument used for measuring very high temperature is:
a) Pyroscope
b) Pyrometer
`c) Seismograph
d) Xylometer (more…)
CNG stands for?
a) Converted Natural Gas
b) Conducted Natural Gas
c) Conduced Natural Gas
d) Compressed Natural Gas (more…)
A camera uses a____ to form an image.
a) convex lens
b) concave lens
c) condenser lens
d) none of these (more…)
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