Physics A dynamo is used to convert Electrical energy into magnetic energy Magnetic energy into mechanical energy Mechanical energy into electrical energy Electrical energy into mechanical energy Electrical energy into magnetic energy Magnetic energy into mechanical energy Mechanical energy into electrical energy Electrical energy into mechanical energy ANSWER DOWNLOAD EXAMIANS APP
Physics In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie ? Visible X-ray Ultraviolet Infrared Visible X-ray Ultraviolet Infrared ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is true of all simple machines? These make work easier Both A & B None of these Work input > work output These make work easier Both A & B None of these Work input > work output ANSWER DOWNLOAD EXAMIANS APP
Physics In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalent to 100 N 1 N 0.1 N 10 N 100 N 1 N 0.1 N 10 N ANSWER DOWNLOAD EXAMIANS APP
Physics Why does a cannon recoil after firing ? Newton's third law of motion Newton's first law of motion Conservation of energy Backward thrust of gases produced Newton's third law of motion Newton's first law of motion Conservation of energy Backward thrust of gases produced ANSWER DOWNLOAD EXAMIANS APP
Physics Electromagnetic waves are transverse in nature is evident by Reflection Interference Polarisation Diffraction Reflection Interference Polarisation Diffraction ANSWER DOWNLOAD EXAMIANS APP
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