Physics In a Laser (say neon laser) all the atoms emit the light waves of Same frequency All of these Same amplitude Same phase Same frequency All of these Same amplitude Same phase ANSWER DOWNLOAD EXAMIANS APP
Physics If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths? LUV < lIR < lVIS LUV > lIR > lVIS LUV < lVIS < lIR LUV > lVIS > lIR LUV < lIR < lVIS LUV > lIR > lVIS LUV < lVIS < lIR LUV > lVIS > lIR ANSWER DOWNLOAD EXAMIANS APP
Physics A mirage occurs because of Diffraction of light Interference of light Reflection by hot ground Total internal reflection by layers of air Diffraction of light Interference of light Reflection by hot ground Total internal reflection by layers of air ANSWER DOWNLOAD EXAMIANS APP
Physics The atmospheric layer reflecting radio waves is called Ozonosphere Stratosphere Ionosphere Mesosphere Ozonosphere Stratosphere Ionosphere Mesosphere ANSWER DOWNLOAD EXAMIANS APP
Physics The magnifying power of an astronomical telescope can be decreased by Decreasing the focal length of the eyepiece Increasing the focal length of the eyepiece Increasing the focal length of the objective None of these Decreasing the focal length of the eyepiece Increasing the focal length of the eyepiece Increasing the focal length of the objective None of these ANSWER DOWNLOAD EXAMIANS APP
Physics The commonly used coolant in refrigerators is Oxygen Ammonia Freon Nitrogen Oxygen Ammonia Freon Nitrogen ANSWER DOWNLOAD EXAMIANS APP
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