What are the essential characteristics of a wave?
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Two parallel beams of electrons are moving in the same direction. Does they repel or attract each other?
Explain what is free fall acceleration?
Explain the Evaporation ?
In any current connection there are two wires one is phase and another is neutral, what is the use of neutral wire?
When a water pump falls to draw water, a bucket of water poured into it sets it working. Why ?
Explain what is photometry?
What is loudness of sound?
What is the difference between diffraction and interference?
How current passes through a capacitor in ac and dc circuits?
What is the second law of thermodynamics?
What is a galvanometer?
Advantage of fixed pulley?