What do you mean by diffraction and what is/are the proper condition/conditions for it?
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heat cannot pass from a cooler substance to a warmer substance without some other process being involved. This is an example of which law of thermodynamics?
What is the difference between the atomic theory and the kinetic theory?
What is sonar?
pressure is greater at the time of walking or standing when ?
Laser is an acronym for what?
Explain the Compound microscope ?
explain principle of potentiometer
Which is the sound wave that is below the human hearing?
How echo is produced?
what happens to the period of a simple pendulum taken into a deep mine ?
How is sound produced?
What forces support an airplane in flight?