Explain when is fluorescence strong?
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What is the Magnet substance ?
Why does a cyclist bend inwards, while turning a corner ?
What does hull speed mean?
When a bar of iron is heated,it expands. What will happen to it's weight when it is heated
Please define e.s.u. it is the unit of ...... It is equal to .....
Which of the surfaces of a thermos flask are silvered and why?
Explain about Vacuum Pump?
Explain the Fluorescence ?
Describe the Sphygmanometer?
What is the heterogenous?
Why ate the mirage effects produced over hot deserts ?
Why is it easy to turn over a leaf with a wet finger ?