Physics The focal length of a concave mirror with a radius of curvature of 20.0 cm is : 10 cm 5 cm 15 cm 20 cm 10 cm 5 cm 15 cm 20 cm ANSWER DOWNLOAD EXAMIANS APP
Physics Planets do not twinkle because They are very far away from the earth resulting in decrease in intensity of light They are nearer to earth and hence we receive a greater amount of light. Their distance from the earth does not change with time They emit light of a constant intensity They are very far away from the earth resulting in decrease in intensity of light They are nearer to earth and hence we receive a greater amount of light. Their distance from the earth does not change with time They emit light of a constant intensity ANSWER DOWNLOAD EXAMIANS APP
Physics The period of revolution of a geostationary satellite is 30 days 365 days Changing continuously 24 hours 30 days 365 days Changing continuously 24 hours 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 Who enunciated the laws of planetary motion? Nicolaus Copernicus Isaac Newton Galileo Johannes Kepler Nicolaus Copernicus Isaac Newton Galileo Johannes Kepler ANSWER DOWNLOAD EXAMIANS APP
Physics Intensity of gravitational field of earth is maximum at Surface Equator Centre of earth Poles Surface Equator Centre of earth Poles ANSWER DOWNLOAD EXAMIANS APP
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