Physics What is refractive index ? None of above 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. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. None of above 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. 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 Magnetic field lines about a current-carrying wire Both of these None of these Extend radially from the wire Circle the wire in closed loops Both of these None of these Extend radially from the wire Circle the wire in closed loops ANSWER DOWNLOAD EXAMIANS APP
Physics Kirchhoff's laws are applicable to None of these C. circuits only C. circuits only C. and A.C. circuits both None of these C. circuits only C. circuits only C. and A.C. circuits both ANSWER DOWNLOAD EXAMIANS APP
Physics A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments Is infinity Depends on the total mass of all the fragments Is zero Depends on the speeds of various fragments Is infinity Depends on the total mass of all the fragments Is zero Depends on the speeds of various fragments ANSWER DOWNLOAD EXAMIANS APP
Physics The composition of electrician solder is Lead-37%, tin-63% Lead-37%, Steel-63% Steel-37%, copper-63% Iron-37%, tin-63% Lead-37%, tin-63% Lead-37%, Steel-63% Steel-37%, copper-63% Iron-37%, tin-63% 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 5R/4 R/2 2R 3R/4 5R/4 R/2 2R 3R/4 ANSWER DOWNLOAD EXAMIANS APP
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