When gravity is the only force acting on an object the object is in what?
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when does one exert greater pressure on ground during walking or standing? why ? what happends to the period of a simple pendulum taken into a deep mine
Explain about Ultraviolet rays?
Explain about Barometer?
When a person whirls a rock on the end of a string and maintains it in uniform circular motion, the force exerted on the rock is most accurately referred to as?
How does a sound wave travel in air?
the question from which area of physics in ONGC Written examination in physics can we expect more?
If blue light is combined with green light, what color of light is produced?
Why does the reflection of objects seen on a cheap looking glass give distorted images ?
Two bulbs, one of 600W and the other of 100W having same voltage rating are connected in series across the supply in a room.Which bulb will glow brighter? If one of the bulb is switched off, what will be effect on illumination?
Why ate some clocks slow in summer and fast in winter ?
Define non-Luminous body ?
explain principle of potentiometer