Physics
Choose the most appropriate answer: In which atmospheric layer are the communication satellites located?

Ionosphere
Troposphere
Stratosphere
Mesosphere

ANSWER DOWNLOAD EXAMIANS APP

Physics
Water pipes in hilly areas often burst on a cold frosty night, because

None of these
Water in the pipes freezes and on freezing water expands, so pipes break
The material of which pipes are made contracts due to cold and so breaks
Frost makes the pipes rusty, so they break

ANSWER DOWNLOAD EXAMIANS APP

Physics
When a pail of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is

Below a certain minimum value depending on amount of water in the pail
Below a certain minimum value irrespective of amount of water in the pail
Above a certain minimum value depending on amount of water in the pail
Above a certain minimum value irrespective of amount of water in the pail

ANSWER DOWNLOAD EXAMIANS APP