Explain the difference between a lens and a mirror?
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Why are the tides produced in the sea ?
The most abundant metal in the atmosphere?
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Is Ohm's Law obeyed in the transformer equation? Explain the answer.
explian construction and working of various dye lasers
Why does the colour of a material look differently in sunlight that than in the electrical-lamp
Why is the earth not used as a return wire in a telephone system, while it is dine so in case of telegraph system.
What is the heterogenous?
Explain what happens when you travel across the dateline?
Two parallel beams of electrons are moving in the same direction. Does they repel or attract each other?
What are the characteristics of a musical sound?
Why is it that sound waves are not normally considered as having particle-like properties, nor raindrops as having wave-like properties? : quantum physics
what is the meltng point of copper?.