Question

Given P = 0.0030m, Q = 2.40m, R = 3000m, Significant figures in P, Q and R are respectively
(a) 2, 2, 1
(b) 2, 3, 4
(c) 4, 2, 1
(d) 4, 2, 3

Answer 1

Answer:(b)2,3,4

Explanation

Answer 2

Answer:

(b) 2, 3, 4

Explanation:

Value of P = 0.0030m, (Given)

Value of Q = 2.40m,  (Given)

Value of R = 3000m,  (Given)

In point P(0.0030) the initial zeros after the decimal point are not significant, therefore, the significant figures in P(0.0030) will be 2.

Similarly in point Q(2.40) the significant figures are 3 as in this case the final zero is significant.

In point  R(3000) all the zeroes will be significant therefore, in R the significant figures will be 4.

Hence, the significant figures in P, Q and R are respectively 2, 3 and 4.