Question
A ray of light hits a mirror and is reflected. If the
mirror rotates by an angle 10° in one direction, then the reflected ray will rotate bySolution
If the plane mirror is rotated by 10 degrees in clockwise direction, then the angle between the incident and reflected rays increases by 20 degrees.
If a man covers a distance in 1 hour, walking at a speed of 5 km/hr, how long will it take him to cover 15 km?
A train travelling at a uniform speed, clears a platform 240 meters long in 10 seconds and passes a telegraph post in 6 seconds. Find the length of the ...
A train is travelling at the rate of 45 km/hr. How many seconds it will take to cover a distance of 5/8 km?
A car which is traveling at a speed of 50 km/hr increased its speed by 10 km/hr after ‘y’ hours and after that, it traveled for (y + 7) hours more. ...
A Bus moving at a speed of 's' km/h can pass a stationary person in 16 seconds and a tunnel Bridge that is 240 meters long in 28 seconds. Determine the ...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 21 km/hr and 15 km/hr, respectively. If the distance covered by ‘A�...
A man takes a total of 5 hrs 30 min by walking to a certain place and coming back by cycle. He would have gained 2 hrs 30 min by cycling both the ways. ...
A man first travels 140 km at 70 km/hr and next 140 km at 35 km/hr. The average speed for the first 280 km of his travelling is:
A car travels at three-fourths of its original speed, taking 20 minutes more than the usual time to cover a given distance. Find ...
Naveen walking at a speed of 15 km/h reaches his office 20 minutes late. Next time he increases his speed by 5 km/h, but he finds he is still late by 5 ...
