Physics The earth is a Good reflector of heat Bad absorber and bad radiator of heat Good absorber and good radiator of heat Non-absorber of heat Good reflector of heat Bad absorber and bad radiator of heat Good absorber and good radiator of heat Non-absorber of heat ANSWER DOWNLOAD EXAMIANS APP
Physics Why the needle of iron swims on water surface when it is kept gently ? Due to surface tension It will remain under the water, when it will displace more water than its weight Due to its shape The density of needle is less than that of water Due to surface tension It will remain under the water, when it will displace more water than its weight Due to its shape The density of needle is less than that of water ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the unit of perceived loudness of sound ? Hertz Sone Phon Decibel Hertz Sone Phon Decibel ANSWER DOWNLOAD EXAMIANS APP
Physics According to the quantum theory of light, the energy of light is carried in discrete units are called Photons Electrons Protons Photoelectrons Photons Electrons Protons Photoelectrons ANSWER DOWNLOAD EXAMIANS APP
Physics The magnifying power of an astronomical telescope can be decreased by None of these Increasing the focal length of the objective Increasing the focal length of the eyepiece Decreasing the focal length of the eyepiece None of these Increasing the focal length of the objective Increasing the focal length of the eyepiece Decreasing the focal length of the eyepiece ANSWER DOWNLOAD EXAMIANS APP
Physics In which of the following cases, kinetic energy is being used in performing work ? Wind mill grinding wheat grain Paddling the bicycle to cover a distance Driving a car to cover a distance Rowing a boat in the lake Wind mill grinding wheat grain Paddling the bicycle to cover a distance Driving a car to cover a distance Rowing a boat in the lake ANSWER DOWNLOAD EXAMIANS APP
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