Physics What is the minimum distance (in metres) required to hear an echo? 13 17 21 10 13 17 21 10 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the highest frequency? Cosmic rays X-rays Microwaves Radio waves Cosmic rays X-rays Microwaves Radio waves ANSWER DOWNLOAD EXAMIANS APP
Physics The number of waves per second in a sound is called ________ of that sound. Acceleration Frequency Velocity Displacement Acceleration Frequency Velocity Displacement ANSWER DOWNLOAD EXAMIANS APP
Physics Energy stored in the nucleus of an atom is called Atomic energy Potential energy Nuclear energy Kinetic energy Atomic energy Potential energy Nuclear energy Kinetic energy ANSWER DOWNLOAD EXAMIANS APP
Physics What is refractive index ? None of above It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. It is defined as the product of speed of light in medium and in vacuum. None of above It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. It is defined as the product of speed of light in medium and in vacuum. ANSWER DOWNLOAD EXAMIANS APP
Physics What type of lens is used in a magnifying glass Convex Concave Plano-concave None of these Convex Concave Plano-concave None of these ANSWER DOWNLOAD EXAMIANS APP
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