"A clock goes slow from midnight by 5 minutes at the end of the first hour, by 10 minutes
Channel: Doubtnut
Date: 12/04/2020

"A clock
 goes slow from midnight by 5 minutes at the end of the first hour, by 10
 minutes at the end of the second hour, by 15 minutes at the end of the third
 hour and so on. What will be the time by this clock after 6 hours?
(a) 5.15
 a.m. (b) 5.30 a.m. (c) 6 a.m. (d) 6.30 a.m."