Question

(a)
2
Given P=0.0030m, Q=2.40m, R=3000m, Significant
figures in P, Q and R are respectively [Pb. CET 2002]​

Answer 1

Explanation:

Given P=0.0030m, Q=2.40m, R=3000m

P = 0.0030

significant : 2

{ the initial zeros after the decimal point are not significant.}

Q = 2.40

significant = 3

{ in this case the final zero is significant }

R = 3000

significant = 4

{all the zeroes will be significant}