Physics Which of the following statements is true when we see ''rainbow' ? We face sun and raindrops The sky remains clear and the sun is at lower position in the sky The Sun remains behind us and we face raindrops In light rainfall, we face Sun We face sun and raindrops The sky remains clear and the sun is at lower position in the sky The Sun remains behind us and we face raindrops In light rainfall, we face Sun ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fiber works on the principle of Refraction Interference Total internal reflection Scattering Refraction Interference Total internal reflection Scattering ANSWER DOWNLOAD EXAMIANS APP
Physics The hair of shaving brush clings together when removed from water due to Elasticity Friction Surface tension Viscosity Elasticity Friction Surface tension Viscosity ANSWER DOWNLOAD EXAMIANS APP
Physics The device used to change the speed of an electric fan is Amplifier Rectifier Regulator Switch Amplifier Rectifier Regulator Switch ANSWER DOWNLOAD EXAMIANS APP
Physics Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? 2.8 km, 0.25 km 3.3 km, 0.30 km 2.2 km, 0.20 km 1.8 km, 0.15 km 2.8 km, 0.25 km 3.3 km, 0.30 km 2.2 km, 0.20 km 1.8 km, 0.15 km ANSWER DOWNLOAD EXAMIANS APP
Physics A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be 5 R/4 R/5 4 R/5 5 R 5 R/4 R/5 4 R/5 5 R ANSWER DOWNLOAD EXAMIANS APP
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