Let us consider, in electromagnetic wave x, y, and Z axis are there. By using Right Hand Rule, Ey × Bz = Vx By using Right Hand Rule EZ × BY = −Vx So, from above two condition there is a possible of two condition there is a possibility of two pairs in which wave can propagate in +ve direction and in second condition it can propagate in -ve x-axis.
A and B are travelling towards each other with a speed of 20 km/hr and 30 km/hr. They started at same time and A covered 30 km less distance than B befo...
A policeman saw a thief from a distance of 450 m. When the policeman started chasing him, the thief also started running. The ratio of speeds of the th...
X started to run from point ‘A’ to ‘B’ at a speed of 23 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 20 km/...
A train travels at an average speed of 75 km per hour without stoppage and with stoppages it covers the same distance at an average speed of 55 km/hr. H...
A cheetah can catch a deer running with a speed of 144 km/h and is 50 meters ahead of it, in 10 seconds. Find the time taken by the cheetah to catch a z...
A boy goes to school at 12 km/Hr and return at a speed of 11 km/hr. If he takes 23 hrs in all. Find the distance from his village to school?
‘A’ and ‘B’ started moving towards each other at same time with a speed of 24 km/hr and 10 km/hr, respectively. If the di...
A train moving at 3/5th of its normal speed reaches its destination 10 hours late. Find the normal time taken by it.
Speed of a car and a bus is 30 km/h and 18 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
A Bike has to cover a distance of 120 km in 15 hours. If it covers half of the journey in 3/5th of the time, the speed to cover the remaining distance i...
