Physics Sound travels with a different speed in media. In what order does the velocity of sound increase in these media? Air, water and iron Water, iron and air Iron, water and air Iron, air and water Air, water and iron Water, iron and air Iron, water and air Iron, air and water ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics Plastics have a lower density than metals Metals are good conductors of heat Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics Plastics have a lower density than metals Metals are good conductors of heat ANSWER DOWNLOAD EXAMIANS APP
Physics A parachute descends slowly whereas a stone dropped from the same height falls rapidly, because A parachute has a larger surface area and air resistance is more Stone is heavier than parachute None of these Special mechanisms are present in parachute A parachute has a larger surface area and air resistance is more Stone is heavier than parachute None of these Special mechanisms are present in parachute ANSWER DOWNLOAD EXAMIANS APP
Physics After removing two electrons from helium atom it become? Gama particle UV rays X rays Alpha particle Gama particle UV rays X rays Alpha particle ANSWER DOWNLOAD EXAMIANS APP
Physics The distance between node and adjacent antinode is 30 cm. The wavelength is 90 cm. 30 cm. 120 cm. 60 cm. 90 cm. 30 cm. 120 cm. 60 cm. ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetism at the centre of a bar magnet is minimum or maximum maximum minimum zero minimum or maximum maximum minimum zero ANSWER DOWNLOAD EXAMIANS APP
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