Clear nights are colder than cloudy nights because of –
Cloudless nights are colder because the nights that have clouds provide a blanket for the earth and trap some of the hot day air where as the cloudless nights have no protection so all the hot air rises up into the sky. radiation is a process in which energetic particles or energetic waves travel through vacuum, or through matter-containing media that are not required for their propagation.
The radius of a circular garden is 42 m. The distance (in m) covered by running 8 rounds around it, is: (Take )
A car completes a journey in 6 hrs with a speed of 50 km/hr. At what speed must it travel to complete the journey in 5 hrs?
1000 metres long train crosses a man who is moving in the same direction with a certain speed, in 40 seconds. If the same train can cross a tree in 20 s...
Speed of a car and a bus is 20 km/h and 10 km/h, respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time ...
Saket and Rakesh are brothers whose shops are located at a distance of 10km and 12km respectively from their home. Both of them start at the same time f...
Two trains for Mumbai leave Delhi at 6 a.m. and 6:30 a.m. and travel at 100 km/h and 136 km/h respectively. Approx. how many km from Delhi will the two ...
The speed of ‘A’ and ‘B’ is 60 km/hr and 30 km/hr, respectively. If the distance covered by ‘A’ in ‘x’ h...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 15 km/hr and 10 km/hr, respectively. If the di...
If a car runs at 30 km/hr, it reaches its destination late by 15 minutes but if runs at 45 km/hr it is late by 7 minutes. What is the correct time for t...
Ratio of speeds of ‘A’ and ‘B’ is 6:7, respectively. If they participate in a 140-metre race and ‘B’ gives ‘A’, a head start of ‘m’ ...
