Thickness of a pencil measured by using a screw gauge (least count. 001 cm ) comes out to be 0.802 cm. The percentage error in the measurement is

Question

Thickness of a pencil measured by using a screw gauge (least count. 001 cm ) comes out to be 0.802 cm. The percentage error in the measurement is (A) 0.125 % (B) 2.43 % (C) 4.12 % (D) 2.14 %

Tardigrade Admin · Accepted Answer

The percentage error is (Δ L/L) × 100 % =(0.001/0.802) × 100 % =0.1246 %=0.125 %

Q. Thickness of a pencil measured by using a screw gauge (least count. $001 c m$ ) comes out to be $0.802 c m$ . The percentage error in the measurement is

$0.125%$

$2.43%$

$4.12%$

$2.14%$

The percentage error is $\frac{Δ L}{L} \times 100%$
$= \frac{0.001}{0.802} \times 100%$
$= 0.1246% = 0.125%$

Q. Thickness of a pencil measured by using a screw gauge (least count. 001cm ) comes out to be 0.802cm. The percentage error in the measurement is

0.125%

2.43%

4.12%

2.14%