Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Reflect back the heat given by earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth Reflect back the heat given by earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth ANSWER DOWNLOAD EXAMIANS APP
Physics One billionth of a second is called Picoseconds Nanosecond Microsecond Millisecond Picoseconds Nanosecond Microsecond Millisecond ANSWER DOWNLOAD EXAMIANS APP
Physics An egg sinks in soft water but floats in a concentrated solution of salt because Albumin dissolves in salt solution and egg becomes lighter Water has high surface tension The density of salt solution exceeds the density of eggs Egg absorbs salt from the solution and expands Albumin dissolves in salt solution and egg becomes lighter Water has high surface tension The density of salt solution exceeds the density of eggs Egg absorbs salt from the solution and expands ANSWER DOWNLOAD EXAMIANS APP
Physics A device used for converting a.c. into d.c. is called Induction coil Dynamo Transformer Rectifier Induction coil Dynamo Transformer Rectifier ANSWER DOWNLOAD EXAMIANS APP
Physics A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan Increases Decreases Remains the same First increases and then decreases Increases Decreases Remains the same First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Physics A copper disc has a hole. If the disc is heated, the size of the hole Decreases Increases First increases and than decreases No change Decreases Increases First increases and than decreases No change ANSWER DOWNLOAD EXAMIANS APP
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