Thanish starts at 8 am to Ananthapuram from Amaravathi and reaches at 6pm. The distance between Amaravathi and Ananthapuram is 500 km. Average velocity of Thanish is
For a point object or for a small finite object, the focal length of a small spherical mirror is related to object distance and image distance as,
\(\frac{1}{f}=\frac{1}{v}+\frac{1}{u}\)
Correct option is (D) 400 km
Speed of the car \(=\frac{Speed}{Time}\)
\(=\frac{300\,km}{6\,hours}\) = 50 km/h
Distance travelled by the car in 8 hours = speed \(\times\) time
= 50 km/h \(\times\) 8 hours
= (50 \(\times\) 8) km = 400 km