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