Moments Multiple Choice Questions (MCQs) PDF Download - 108

George has a weight of 500 N, which his half of his father's weight. He, his father and his uncle sit on a see-saw. If both George and his father sit on the right end of the see-saw, 5 m from the pivot, and his uncle's weight is same as his fathers, where should George's uncle sit in order to achieve a state of balance?

1. 7.5 m from the pivot, on the right end
2. 7.5 m from the pivot, on the left end
3. 5 m from the pivot, on the right end
4. 5 m from the pivot, on the left end

Reverse process of melting is

1. boiling
2. solidification
3. condensation
4. sublimation

A thermocouple shows an EMF of 5.00 mV with one of its junctions at 0 °C and the other at 100 °C. If the 100 °C junction is taken out of the boiling water and placed in a glass of water having temperature same as the room temperature (assume room temperature in this case = 25 °C), the EMF registered on thermocouple would be

1. 1.25 mV
2. 5 mV
3. 10 mV
4. 20 mV

Energy used by a moving object is termed as

1. Potential Energy
2. Mechanical Energy
3. Kinetic Energy
4. Thermal Energy

High response of thermocouple thermometer is due to

1. double junctions as they would carry more heat energy
2. two wires because the thermal energy would be divided
3. heavy mass because voltage would increase the flow of voltage
4. metal wires because they are good conductors of electricity