GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the expression
A
2
B
3
C
4
D
1
Explanation: 

Detailed explanation-1: -For example, 0.0020499 to two significant figures is 0.0020. The first significant digit is 2, the second significant digit is 0.

Detailed explanation-2: -There are 4 significant figures Non-zero digits are always significant.

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