What is different between secondary electron image and back scattered electron image?
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Explain the branches of physics?
Explain the Photometry ?
Explain why does sun appear flat during sunrise and sunset?
a ball of mass 500g moving with a velocity of 10m/s collides with another ball of mass 250g.after the impact,the second ball moved off with a velocity of 8m/s calculate the final velocity of the first ball.
Why in cold countries, the water at the surface freezes and in the inner portion it is in the sate of water ?
What is Concave lens ?
Explain heat treatment. Why and how is it done?
Who first described how shock waves are formed?
Explain the Dew Point ?
How do you magnetize metal?
Tell me what is ion pair energy?
What do you know about Noble Gases?