Question

2. If the local time at Dwarka (69°01'E) in Gujarat to the west of India is 6 am, what will be
the local time at Dibrugarh (94°58'E approximately 95°), in Assam, in the east?
(a) 4.16 am
(b) 6 am
(C) 7.44 am
(d) 7.44 pm​

Answer 1

Answer:c

Explanation:

Earlier, Dibrugarh in Assam and Dwarka in Gujarat had a difference of 1hour and 45 min.

There is a time lag of two hours between Arunachal Pradesh and Gujarat.

To aviod the time differences  82 degrees 30' Eastern Longitude is taken as Standard meridian of India which is passing through the middle of the country.

We have uniform time because of  Indian Standard Time.

Answer 2

Answer:

The local time at Dibrugarh(approximately 95°E) in Assam will be 07:44am

GIVEN :

The local time at Dwarka in Gujarat = 6am

Longitude of Dwarka = 69°01'E = 69°E approx

Longitude of Dibrugarh in Assam = 95°E approx

TO FIND :

The local time at Dibrugarh

Solution :

The longitudinal distance between the two cities Dibrugarh and Dwarka is

= 95°-69°

=26°

We know that 1° of longitude makes a time difference of 4minutes

Therefore, 26° longitude will make a time difference of

=(26×4) minutes

=104 minutes

=104/60 hours

=1 hour 44 minutes

As Dibrugarh is towards to East of Dwarka, therefore the local time of Dibrugarh will be ahead of that of Dwarka

Hence, The local time of Dibrugarh will be

=( 6+ 1hr 44mins)

=7hr 44 mins

Therefore, 07:44 am

Hence, the local time at Dibrugarh(approximately 95°E) in Assam will be 07:44am.

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