Physics What is the minimum distance (in metres) required to hear an echo? 10 21 17 13 10 21 17 13 ANSWER DOWNLOAD EXAMIANS APP
Physics Acceptable noise level for human ear < 85 db > 85 db None of these = 85 db < 85 db > 85 db None of these = 85 db ANSWER DOWNLOAD EXAMIANS APP
Physics Friction is caused by the ________ on the two surfaces in contact. Gaps Irregularities Smoothness Densities Gaps Irregularities Smoothness Densities ANSWER DOWNLOAD EXAMIANS APP
Physics What is the reason for twinkling of stars ? Atmospheric refraction Atmospheric reflection Total internal reflection Dispersion of light Atmospheric refraction Atmospheric reflection Total internal reflection Dispersion of light ANSWER DOWNLOAD EXAMIANS APP
Physics Ball pen functions on the principle of : Gravitational force Surface tension Viscosity Boyle's Law Gravitational force Surface tension Viscosity Boyle's Law ANSWER DOWNLOAD EXAMIANS APP
Physics The substance which conducts current in the solid state is Sodium chloride Iodine Diamond Graphite Sodium chloride Iodine Diamond Graphite ANSWER DOWNLOAD EXAMIANS APP
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