Physics Which of these is true of all simple machines? Work input > work output None of these Both A & B These make work easier Work input > work output None of these Both A & B These make work easier ANSWER DOWNLOAD EXAMIANS APP
Physics An oil drop spreads over water because Oil is lighter than water Oil does not mix with water water has a higher surface tension Oil is more viscous Oil is lighter than water Oil does not mix with water water has a higher surface tension Oil is more viscous ANSWER DOWNLOAD EXAMIANS APP
Physics Positive feedback is used in Rectifiers Amplifiers Oscillators None of these Rectifiers Amplifiers Oscillators None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following phenomenon helps to conclude that light is a transverse wave? Polarisation Refraction Diffraction Interference Polarisation Refraction Diffraction Interference ANSWER DOWNLOAD EXAMIANS APP
Physics It is more difficult to walk on a sandy road than on a concrete road because the friction between sand and feet is more than that between concrete and feet. the sand is grainy but concrete is smooth. sand is soft and concreter is hard. the friction between sand and feet is less than that between concrete and feet. the friction between sand and feet is more than that between concrete and feet. the sand is grainy but concrete is smooth. sand is soft and concreter is hard. the friction between sand and feet is less than that between concrete and feet. ANSWER DOWNLOAD EXAMIANS APP
Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Reflect back the heat given by earth Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Reflect back the heat given by earth Prevent cold waves from the sky descending on earth ANSWER DOWNLOAD EXAMIANS APP
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