Physics A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be : (7/3)f (4/3)f F (3/4)f (7/3)f (4/3)f F (3/4)f ANSWER DOWNLOAD EXAMIANS APP
Physics The device used to change the speed of an electric fan is Switch Regulator Rectifier Amplifier Switch Regulator Rectifier Amplifier ANSWER DOWNLOAD EXAMIANS APP
Physics Water from soil enters into the root hairs owing to : Capillary pressure Atmospheric pressure Osmotic pressure Root pressure Capillary pressure Atmospheric pressure Osmotic pressure Root pressure 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 Special mechanisms are present in parachute None of these Stone is heavier than parachute A parachute has a larger surface area and air resistance is more Special mechanisms are present in parachute None of these Stone is heavier than parachute ANSWER DOWNLOAD EXAMIANS APP
Physics Radio waves sent out by a radio stations are reflected by Ionosphere Troposphere Stratosphere Mesosphere Ionosphere Troposphere Stratosphere Mesosphere ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on which of the following principle of light? Diffraction Total internal reflection Refraction Reflection Diffraction Total internal reflection Refraction Reflection ANSWER DOWNLOAD EXAMIANS APP
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