Explain what is a crest?
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What is the purpose served by ventilation in building ?
Explain optical telescopes?
What is centigrade thermometer ?
What does the acronym am stands in radio transmission?
Explain what is the shadows?
Explain how many more times louder is 70 decibels than 10 decibels?
Explain the difference between a lens and a mirror?
What is Soda lime ?
Why does and electric bulb make a bang or loud noise, when it is broken ?
What is the Unit for charge?
Explain what is free fall acceleration?
Why does water boil at 100oC ?