question_answer

A body weighs 22.42 g and has a measured volume of 4.7 cc The possible errors in the measurement of mass and volume are 0.01 g and cc. Then the maximum error percentage in the density will be

A)                  22%                                      

B)                  2.2%

C)                  0.22%                                  

D)                  0.022%

Correct Answer: D

Solution :

                A man moves 20 m north, then 10 m east and then \[10\sqrt{2}m\]south-west, then his displacement is AD.                 Then distance A to D = AD = 10m (north)