The New Cartesian Sign convention is used in spherical mirrors and lenses to determine the signs for distances, focal lengths, and heights in geometric optics.
A boy can swim in water with a speed of 15 km/hr in still water. If the speed of the stream is 8 km/hr, what will be the time taken by the boy to cover ...
If a man rows 8km downstream in 6 hours and 4km upstream in 4 hours, then how long will it take him to cover 14km in still water?
Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is 1...
Boat ‘A’ covers 150 km in downstream in 15 hours. If the speed of stream is 2 km/hr then find the time taken by boat ‘A’ to cover 108 km in upst...
The speed of current is 18 km/hr. If the speed of the boat in still water had been 7 km/hr more than the original speed, then it would take 8 hours to c...
A man rows upstream 18 km and downstream 30 km taking 6 hours each. Find the man’s speed in still water.
A boat covers 35 km downstream in 2 h and covers the same distance upstream in 7 h. Find the speed (in km/h) of the boat in still water.
The downstream speed of a boat is 48 km/hr, while its upstream speed is 32 km/hr. The boat takes 10 hours to travel a distance of (p + 40) km downstream...
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 975 km downstream is 19.5 hours. Find t...
The speed of the stream is 15 km/h. Boat ‘A’ covers 140 km distance against the stream in 4 hours and boat ‘B’ covers 105 km distance against th...
