Question
Light from a point source in air falls on a spherical
glass surface (n=1.5 c and radius of curvature = 10 cm). The distance of the light source from the glass surface is 50 cm. At what position the image is formed?Solution
The correct answer is B
Two trains running in opposite directions cross a pole in 25 seconds and 15 seconds respectively and they cross each other in 21 seconds.Find the ratio ...
Train X, traveling at a speed of 36 km/hr, crosses another train Y, which is moving in the opposite direction at a speed of 72 km/hr, in 't' seconds. If...
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There are two trains A and B. A start from point X at 5 AM towards point Y. Another train B starts at 7 AM from point Y. If they meet at 9 AM and speed ...
A train crosses a pole and a platform of length 420 metres in 10 seconds and 25 seconds, respectively. Find the length of train.
A train 200 m long running at 36 km/hr takes 45 seconds to cross a bridge. The length of the bridge is
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Two trains of same length are running in parallel tracks in the same direction with speed 55 km/hr and 115 km/hr respectively. The latter completely cro...
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