Question
Five persons A, B, C, D and E occupy seats in a row at
random. The probability that A and B sit next to each other is:Solution
The correct answer is C
Why does a fountain pen leak on an airplane flying at high altitude?
A sphere of radius 1m encloses a charge of 10μC. Another charge of −5μC is placed inside the sphere. The net electric flux would be :
The 'four stroke petrol engine' is based on –
A positron is an anti-particle of an electron, having the same mass but opposite charge to electron. Then, the minimum energy released in annihilation ...
Which physical quantity is conserved in a collision (in the absence of external forces)? Â
The resistance of a wire is directly proportional to:
Figure-out the case from the following in which the rope will break if an animal of mass 30 kg climbs on a rope, which can stand a maximum tension of 5...
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will -
In which direction does torque act?
A car moving at 72 km/h is brought to rest in 10 seconds. What is its acceleration? Â
