Physics Stars twinkle because None of these the distance of the stars from the earth changes with time. the intensity of light emitted by them changes with time. the refractive index of the different layers of the earth's atmosphere ch None of these the distance of the stars from the earth changes with time. the intensity of light emitted by them changes with time. the refractive index of the different layers of the earth's atmosphere ch ANSWER DOWNLOAD EXAMIANS APP
Physics When an electric bulb breaks, there is an explosive sound. That is due to None of these The air outside rushing in to fill the vacuum inside the bulb The compressed gases inside rushing out suddenly The chemical reaction between the gases inside the bulb None of these The air outside rushing in to fill the vacuum inside the bulb The compressed gases inside rushing out suddenly The chemical reaction between the gases inside the bulb ANSWER DOWNLOAD EXAMIANS APP
Physics Sound becomes hazardous noise pollution at decibels? Above 50 db Above 80 db Above 120 db Above 30 db Above 50 db Above 80 db Above 120 db Above 30 db ANSWER DOWNLOAD EXAMIANS APP
Physics Bats can sense obstacles because they produce Infrasonic sound waves Supersonic sound waves Micro sound waves Ultrasonic sound waves Infrasonic sound waves Supersonic sound waves Micro sound waves Ultrasonic sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics Anemometer is an instrument meant for measuring ________ Air masses Velocity Wind speed Temperature Air masses Velocity Wind speed Temperature ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the second largest source of global energy? Nuclear Energy Renewable Energy None of these Fossil fuel Nuclear Energy Renewable Energy None of these Fossil fuel ANSWER DOWNLOAD EXAMIANS APP
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