If a man takes 25 minutes to reach railway station and his train is scheduled at “$%”. Then at what time should he leave to reach the station 10 minutes earlier?
Scheduled time of train = “$% = 5:20 To reach station 10 minutes earlier = 5:20 – 10 minutes = 5:10 Man take 25 minutes to reach station = 5:10 – 25 minutes = 4:45 = “%#”
Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?