Physics After long periods of use, a grey spot develops on the inside of a bulb. This is because The heat of the bulb scorches the glass at the top Glass undergoes a change due to the heat Dust inside the bulb condenses on the top The tungsten filament evaporates and collects there The heat of the bulb scorches the glass at the top Glass undergoes a change due to the heat Dust inside the bulb condenses on the top The tungsten filament evaporates and collects there ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the fastest communication channel? Microwave All are operating at nearly the same propagation speed Radio wave Optical fiber Microwave All are operating at nearly the same propagation speed Radio wave Optical fiber ANSWER DOWNLOAD EXAMIANS APP
Physics Water has maximum density at 4°C 100°C 273°C 0°C 4°C 100°C 273°C 0°C ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following reflects back more sunlight as compared to other three? Land covered with fresh snow Sand desert Paddy crop land Prairie land Land covered with fresh snow Sand desert Paddy crop land Prairie land ANSWER DOWNLOAD EXAMIANS APP
Physics For which of the following substances, the resistance decreases with increase in temperature? Platinum Pure silicon Copper Nichrome Platinum Pure silicon Copper Nichrome ANSWER DOWNLOAD EXAMIANS APP
Physics The fuse in our domestic electric circuit melts when there is a high rise in Inductance Current Capacitance Resistance Inductance Current Capacitance Resistance ANSWER DOWNLOAD EXAMIANS APP
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