Question

the longest total solar eclipse can only last up to

Answer 1

Till now the longest solar eclipse was for 6 min and 31 sec.......!!
It can even last longer but till now we know about this only..

Answer 2

ANSWER:-

The maximum theoretical duration for a total solar eclipse is 7 min 31 sec. The longest totality ever recorded was on the 20th June 1955 over the Philippines when totality lasted 7 minutes and 28 seconds. The maximum width of the path of totality is about 250 km.