is photocell can be used as photodiode
whether egg or hen came first
What is the difference between the atomic theory and the kinetic theory?
What is meant by energy spectrum of a black body? : quantum physics
What is the difference between free electron theory and band theory of solids?
What is the difference between collector & emitter of transistor, even though material used for both same?
Explain the Light ?
State 'law of machines'?
How can you save the sea from oil and sound polution?
What is the wavelength of sound in air?
Explain radio telescopes?
Why is there more friction when you push an object than when you pull it?
Why is diamond cut to make if brilliant ?