Explain what is the ray of light?
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What is white body ?
What is the commercial unit of electrical energy ?
Explain about Microphone?
assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?
Explain about Scintillometer?
Explain the Shadows ?
What are the weights in pounds of liquid gallons?
Can a solid and liquid together be possible?
Please define e.s.u. it is the unit of ...... It is equal to .....
battery of 180 AMP HOUR”
Order the following from the worst electrical conductor to the best electrical conductor? Glass, rubber, iron, dry wood
Explain what is meant by 4th dimension?