Physics Which one of the following determines the sharpness of image in a camera ? Size of the camera The exposure time The aperture The focal length of the lens Size of the camera The exposure time The aperture The focal length of the lens ANSWER DOWNLOAD EXAMIANS APP
Physics A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be 5 R/4 4 R/5 5 R R/5 5 R/4 4 R/5 5 R R/5 ANSWER DOWNLOAD EXAMIANS APP
Physics Which microscope is often used to view metal surfaces? None of these Electron microscopes Scanning tunneling microscopes Optical microscopes None of these Electron microscopes Scanning tunneling microscopes Optical microscopes ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of sound in air Does not depend on temperature Increases with decrease of temperature Decreases with increase of temperature Decreases with decrease of temperature Does not depend on temperature Increases with decrease of temperature Decreases with increase of temperature Decreases with decrease of temperature ANSWER DOWNLOAD EXAMIANS APP
Physics Dioptre is the unit of Focal length of a lens Light intensity Sound intensity Power of a lens Focal length of a lens Light intensity Sound intensity Power of a lens ANSWER DOWNLOAD EXAMIANS APP
Physics Formula for distance is Time / speed Speed x acceleration Speed x time Velocity / speed Time / speed Speed x acceleration Speed x time Velocity / speed ANSWER DOWNLOAD EXAMIANS APP
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