Explain what is the direction of null vector?
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How will it be possible to kindle fire, if we had no matches ?
What evidence is there supporting the big bang theory?
Describe the Infra-red and Ultra-voilet rays?
What are the branches of physics?
how much mercury overflows when a glass vessel filled to the brim with 50 cubic centimeter of mercury 15°C is heated to 75°C of glass?
What is the difference between collector & emitter of trnsistor,even though material used for both same.
What is the index of refraction of air?
Explain the difference between a lens and a mirror?
What is the Ordinary magnet ?
In physics WHY WE USE MATHEMATICAL STEPS to describe many theorems
What is the Magnetic substance ?
What is a Noise ?