In a group of 760 persons , 510 can speak Hindi and 360 can speak English .Find : how many can speak both Hindi and English View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and...
Q.Explain how heat losses due to conduction, convection and radiation are minimized in a Thermos Flask . Q. Look at Figure. Mark where the heat is being transferred by conduction, by convection and by radiation. Q.Name a device that prevents loss (or gain) of energy by conduction, convect...
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