2017 CAIE AS & A level May June Physics Paper 11 Q. No. 9 (9702/11/M/J/17) by Sajit C Shakya

2017 Cambridge International AS & A level May June Physics Paper 11 Q. No. 9 (9702/11/M/J/17) by Sajit Chandra Shakya from Nepal Chapter - KINEMATICS A student attempts to find the density ρ of aluminium by taking measurements of a rectangular sheet. mass m = 51.6 ± 0.1 g length l = 100.0 ± 0.1 cm width w = 10.0 ± 0.1 cm thickness t = 0.20 ± 0.01 mm He uses the equation ρ = w t ml to calculate the density. What is the calculated value of density with its uncertainty? A 0.26 ± 0.01 g cm–3 B 0.26 ± 0.02 g cm–3 C 2.6 ± 0.1 g cm–3 D 2.6 ± 0.2 g cm–3