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. 4 only 3 and 4 only 1, 2, 3 and 4 1, 2 and 3 only 4 only 3 and 4 only 1, 2, 3 and 4 1, 2 and 3 only ANSWER DOWNLOAD EXAMIANS APP
Physics Stars twinkle because the refractive index of the different layers of the earth's atmosphere ch the distance of the stars from the earth changes with time. the intensity of light emitted by them changes with time. None of these the refractive index of the different layers of the earth's atmosphere ch the distance of the stars from the earth changes with time. the intensity of light emitted by them changes with time. None of these ANSWER DOWNLOAD EXAMIANS APP
Physics If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is 0.2 J 500 J 20 J 5 J 0.2 J 500 J 20 J 5 J ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not true about X-rays? Can be reflected or refracted Travel with the speed of light Have low penetrating power Can affect photographic plates Can be reflected or refracted Travel with the speed of light Have low penetrating power Can affect photographic plates ANSWER DOWNLOAD EXAMIANS APP
Physics In case of uniform circular motion, the acceleration is Constant in magnitude and directed radially inwards Variable in magnitude but constant in direction Zero Variable in magnitude but tangential to the circle Constant in magnitude and directed radially inwards Variable in magnitude but constant in direction Zero Variable in magnitude but tangential to the circle ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following phenomenon helps to conclude that light is a transverse wave? Interference Polarisation Refraction Diffraction Interference Polarisation Refraction Diffraction ANSWER DOWNLOAD EXAMIANS APP
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