Question

Why is there a time lag of two hours from Gujarat to Arunachal Pradesh?
A.Because of India's east west extent
B.Because of India's north south extent
C.Because of India’s proximity to oceans
D.Because of land mass

Answer 1

Hint: The time on the watch is not determined by the position of the Sun. Time is only determined by the time zone and not by sunrise or sunset. The local time zone and the standard time zone are the two time zones that are available.

Complete answer:
 To provide a standard time for comparison and to prevent misunderstanding, for the entire world 82°30’ eastern longitude has been taken as a standard time. The easternmost part of India is Arunachal Pradesh and Gujarat is the westernmost part of India. A time lag of two hours from Gujarat to Arunachal Pradesh is created by this. The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat. The longitude and latitude of the area defines the local time of that area. But because of change in local time in every area, it is difficult to apply district local times. Between the easternmost and westernmost parts of the country there is a longitudinal variation of nearly 30 degrees. For every 15 degree longitude there is a difference of one hour. Therefore, there is a time difference of two hours between Gujarat and Arunachal Pradesh. If it is 6 a.m in Arunachal Pradesh, the local time of Gujarat will be two hours behind Arunachal Pradesh and thus, it will be 4 a.m. in Gujarat.

Hence, the correct answer is option (A).

Note:In India, the standard time of India is the local time of Allahabad in Uttar Pradesh. So, the time on the watch would be the same whether the person is in Gujarat or West Bengal or he is in Kanyakumari or in Kashmir.