Physics Which of the following parts of the sunlight makes the solar cooker hot ? Infra red Red light Ultra violet Cosmic rays Infra red Red light Ultra violet Cosmic rays ANSWER DOWNLOAD EXAMIANS APP
Physics In the atmosphere ultraviolet rays are absorbed by Oxygen Ozone Nitrogen Helium Oxygen Ozone Nitrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Physics Energy of Ultraviolet rays is great than X-rays Infrared rays Gamma rays Cosmic rays X-rays Infrared rays Gamma rays Cosmic rays ANSWER DOWNLOAD EXAMIANS APP
Physics What is the wavelength of visible spectrum ? 7800 A° – 8000 A° 8500 A° – 9800 A° 1300 A°–3000 A° 3900 A° – 7600 A° 7800 A° – 8000 A° 8500 A° – 9800 A° 1300 A°–3000 A° 3900 A° – 7600 A° ANSWER DOWNLOAD EXAMIANS APP
Physics Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ? Stratosphere Exosphere Ionosphere Mesosphere Stratosphere Exosphere Ionosphere Mesosphere ANSWER DOWNLOAD EXAMIANS APP
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