NTPC CBT-2 Physics Quiz - 39

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Question 1:

The twinkling of light of the star as observed on earth is due to which phenomena?

Question 2:

“Svedberg Unit” is a unit of _________?

Question 3:

The science of weights and measures is called-

Question 4:

Which of the these physical quantities is a vector quantity?

Question 5:

What does the term LASER stand for?