Physics What is refractive index ? 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. None of above ANSWER DOWNLOAD EXAMIANS APP
Physics In severe winter, in cold countries water pipes burst because High atmospheric pressure Contraction of water pipes Water expands on freezing Combined effect of all the above three High atmospheric pressure Contraction of water pipes Water expands on freezing Combined effect of all the above three ANSWER DOWNLOAD EXAMIANS APP
Physics A person lifts luggage of 20 kg from the ground and puts it on his head 2m above the ground. Calculate the work done by him. (g = 10 ) 200J 20 J 400J 40J 200J 20 J 400J 40J ANSWER DOWNLOAD EXAMIANS APP
Physics In a vacuum, all electromagnetic waves have the same Wavelenth Frequency Velocity All listed here Wavelenth Frequency Velocity All listed here ANSWER DOWNLOAD EXAMIANS APP
Physics The safest hammers are those with heads that are Cast steel and chiseled Chiseled and drop forged Welded and alloyed Alloy and drop-forged steel Cast steel and chiseled Chiseled and drop forged Welded and alloyed Alloy and drop-forged steel ANSWER DOWNLOAD EXAMIANS APP
Physics Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds. 20 12500 40 6250 20 12500 40 6250 ANSWER DOWNLOAD EXAMIANS APP
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