Physics When a steel ball is placed on the surface of mercury, it does not sink because Of the high viscosity of mercury Of the surface tension of mercury The density of mercury is greater than that of steel Mercury is a semisolid Of the high viscosity of mercury Of the surface tension of mercury The density of mercury is greater than that of steel Mercury is a semisolid ANSWER DOWNLOAD EXAMIANS APP
Physics Radiocarbon is produced in the atmosphere as a result of Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Lightning discharge in atmosphere. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Lightning discharge in atmosphere. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. ANSWER DOWNLOAD EXAMIANS APP
Physics To resolve an object in an electron microscope, The wavelength of the electrons must be close to the diameter of the object None of these The wavelength of the electrons must be greater than the diameter of the object. Both A & B The wavelength of the electrons must be close to the diameter of the object None of these The wavelength of the electrons must be greater than the diameter of the object. Both A & B ANSWER DOWNLOAD EXAMIANS APP
Physics Sound travels with a different speed in media. In what order does the velocity of sound increase in these media? Iron, air and water 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 ANSWER DOWNLOAD EXAMIANS APP
Physics If the temperature of a place increases suddenly, the relative humidity Decreases Remains constant Increases Fluctuates Decreases Remains constant Increases Fluctuates ANSWER DOWNLOAD EXAMIANS APP
Physics A cyclist leans inwards when he is negotiating a curve so that No frictional force may be produced between the wheels and the axle He may increase his speed Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. His weight may be reduced No frictional force may be produced between the wheels and the axle He may increase his speed Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion. His weight may be reduced ANSWER DOWNLOAD EXAMIANS APP
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