Question

ab?
21. A physical quantity x is calculated from x =
ab²/✓c
Calculate the percentage error in measuring x when the
percentage errors in measuring a, b, c are 4, 2 and 3 per cent
respectively​

Answer 1

Answer:

x=ab

2

c

−1/2

We know from rules of propagation of error.

x

Δx

=

a

Δa

+

b

2Δb

+

2

1

c

Δc

⇒

x

Δx

=4+2×2+

2

1

×3=8+1.5=9.5%