Physics Which of the following is not caused by atmospheric refraction of light ? Twinkling of stars at night Sun becoming visible two or three minutes before actual sunrise Sun appearing red at sunset Sun appearing higher in the sky than it actually is Twinkling of stars at night Sun becoming visible two or three minutes before actual sunrise Sun appearing red at sunset Sun appearing higher in the sky than it actually is ANSWER DOWNLOAD EXAMIANS APP
Physics If a band is played on the moon the sound will Not be heard at any distance at all from it Be heard by us faintly Reverberate Be heard upto 10km from it Not be heard at any distance at all from it Be heard by us faintly Reverberate Be heard upto 10km from it ANSWER DOWNLOAD EXAMIANS APP
Physics Stars twinkle because the refractive index of the different layers of the earth's atmosphere ch None of these the intensity of light emitted by them changes with time. the distance of the stars from the earth changes with time. the refractive index of the different layers of the earth's atmosphere ch None of these the intensity of light emitted by them changes with time. the distance of the stars from the earth changes with time. ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the longest wavelength? Ultraviolet radiation Infrared radiation X-ray radiation Visible radiation Ultraviolet radiation Infrared radiation X-ray radiation Visible radiation ANSWER DOWNLOAD EXAMIANS APP
Physics Sound becomes hazardous noise pollution at decibels? Above 120 db Above 30 db Above 50 db Above 80 db Above 120 db Above 30 db Above 50 db Above 80 db ANSWER DOWNLOAD EXAMIANS APP
Physics In a diesel engine the high temperature needed to ignite the fuel is achieved by An electrical spark The battery Using heat from exhaust Compressing air in the cylinders An electrical spark The battery Using heat from exhaust Compressing air in the cylinders ANSWER DOWNLOAD EXAMIANS APP
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