Explain the Sound ?
Explain the difference between optical zoom, digital zoom and smart zoom?
Why a water pump raises water to a greater height at Bombay than at Simla
Explain what does gravitational force depend on?
What is a positron?
Why does oil rise up the wick of the capillary ?
What is Potential Energy ?
What is the role of a transformer in a rectifier?
How is radiation emitted from the body?
Why ate the mirage effects produced over hot deserts ?
What is Insulators ?
the hardest substance available on earth
Why dies the liquid not come out of the dropper, unless the rubber id Pressed ?