Physics Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K? K1+k2/k1k2 None 2k1k2/k1+k2 K1k2/k1+k2 K1+k2/k1k2 None 2k1k2/k1+k2 K1k2/k1+k2 ANSWER DOWNLOAD EXAMIANS APP
Physics Superconductors are those elements Which turn into insulators at very low temperatures Whose resistance falls almost to zero at very low temperatures Which conduct electricity only at super-high temperatures Whose conductivity is intermediate between metals and insulators Which turn into insulators at very low temperatures Whose resistance falls almost to zero at very low temperatures Which conduct electricity only at super-high temperatures Whose conductivity is intermediate between metals and insulators ANSWER DOWNLOAD EXAMIANS APP
Physics The metal whose electrical conductivity is more, is Silver Aluminium Lead Copper Silver Aluminium Lead Copper ANSWER DOWNLOAD EXAMIANS APP
Physics Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? The lighter mass will reach greater height Both will reach the same height The heavier mass will reach greater height Any of them may reach greater height The lighter mass will reach greater height Both will reach the same height The heavier mass will reach greater height Any of them may reach greater height ANSWER DOWNLOAD EXAMIANS APP
Physics Kepler's law of planetary motion states that the square of the time period is proportional to the Fourth power of the semi-major axis Square of the semi-major axis Semi-major axis Cube of the semi-major axis Fourth power of the semi-major axis Square of the semi-major axis Semi-major axis Cube of the semi-major axis ANSWER DOWNLOAD EXAMIANS APP
Physics In MRI machine, which one of the following is used? Sound wave Ultra-sound wave X-ray Magnetic wave Sound wave Ultra-sound wave X-ray Magnetic wave ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS