Physics Bending of light rays in denser medium is termed as: Reflection Deflection Refraction Dispersion Reflection Deflection Refraction Dispersion ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the highest frequency? Cosmic rays Microwaves Radio waves X-rays Cosmic rays Microwaves Radio waves X-rays ANSWER DOWNLOAD EXAMIANS APP
Physics If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? Increases Depends upon the metal Unchanged Decreases Increases Depends upon the metal Unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics What is refractive index ? It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. None of above 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. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. None of above It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. ANSWER DOWNLOAD EXAMIANS APP
Physics Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes 2R 5R/4 3R/4 R/2 2R 5R/4 3R/4 R/2 ANSWER DOWNLOAD EXAMIANS APP
Physics Working of safety fuses depends upon1. magnetic effect of the current2. chemical effect of the current3. magnitude of the current4. heating effect of the currentSelect the correct answer using the code given below. 3 and 4 only 4 only 1, 2, 3 and 4 1, 2 and 3 only 3 and 4 only 4 only 1, 2, 3 and 4 1, 2 and 3 only ANSWER DOWNLOAD EXAMIANS APP
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