Physics Choose the most appropriate answer: In which atmospheric layer are the communication satellites located? Ionosphere Troposphere Stratosphere Mesosphere Ionosphere Troposphere Stratosphere Mesosphere ANSWER DOWNLOAD EXAMIANS APP
Physics Which among the following is false about displacement? Displacement is never greater than Distance It can be positive, negative or zero Its SI unit is meter It is always positive Displacement is never greater than Distance It can be positive, negative or zero Its SI unit is meter It is always positive ANSWER DOWNLOAD EXAMIANS APP
Physics Large astronomical telescopes always use as objective lens mirror combinations of lenses None of these lens mirror combinations of lenses None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in 4.2 years 42 years 4.2 seconds 42 seconds 4.2 years 42 years 4.2 seconds 42 seconds 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 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 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
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