Question

A person travelling from mumbai to london has to alter his watch give reason

Answer 1

Answer:

due to differences in time zones,

London is at GMT+0

Mumbai is at GMT+5:30

so the watche has to set back 5:30 hours backwards.

Explanation:

for calculation of time, we use longitude as reference.

London uses GMT (Greenwich Mean Time), which is reference to 0 deg in longitude.

Mumbai uses IST (Indian Standard Time), which is st 82° 30'

longitude.

for each 1° of longitude it takes 4 mins of time (1440 mins a day divided by 360°)

so,

$82 \times 4 = 328 \\ \\(30 \div 60) \times 4 = 2 \\ \\ 328 + 2 = 330 \: mins$

which is equivalent to 5:30 hours.

that's the reason for changing clocks backwards.

hope this helps. :)

Answer 2

Answer:

The answer is = 330 m

Explanation:

because the international countries have different timings