i. mass ii. weight iii. relative density

A. i only
B. ii only
C. iii only
D. i and iii only

Correct Answer: Option D

D. i and iii only

SEE ALSO  A car moving at 20m/s with its horn blowing (f = 1200Hz) is chasing another car going at 15m/s. What is the apparent frequency of the horn as heard by the driver being chased?

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