What is sonar ( sound navigation and ranging )?
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Explain about Barometer?
What is the Magnetic substance ?
What is the wavelength of sound in air?
What is Concave lens ?
How current passes through a capacitor in ac and dc circuits?
Why is water in kept in ?gharas? in summer ?
Define Bulk modulus ?
Why is there a change in the weight of a body if the earth changes its speed ?
What does the mev in mev photon mean?
Explain the Dew Point ?
How does the snake move over the ground ?
Why have the electron and the proton the same charge whereas the proton is 1836 times heavier?