(a) The metal detector works on the principle of resonance in ac circuit.
(b) When Sunita's friend is passed through a metal detector, her friend in fact, passing through a coil...
Let the time taken by the car to reach the destination, while travelling with a speed of 80 km/hr, be x hours.
The following table is obtained.
Speed (in km/hr)
60
80
Time taken (in...
For bus X,
Speed= Distance/Time
Speed=360/5=72km/h
For bus Y,
Speed= Distance/Time
Speed=476/7=68 km/h
Speed of bus X is more than that of bus Y. Hence, bus X travels faster.
