What is a Pressure ?
Who first described how shock waves are formed?
Explain what is the direction of null vector?
Describe the Sphygmanometer?
What is a Compound ?
Which particles/ rays do radioactive substances emit?
How is the bullet in a man?s body located ?
Tell me how many neutrons and how many protons are present in a single deuterium nucleus?
How can you estimate the height of a bridge by dropping a stone from it ?
What is the index of refraction of air?
Explain what is the homogenous?
the hardest substance available on earth
What secondary color of light is produced by mixing the primary colors of red and blue?