Energy Changes Quiz Questions and Answers PDF - 9

MCQ 41: If energy loss is zero then decrease in G.P.E is equal to

1. decreases in kinetic energy
2. gain in kinetic energy
3. constant kinetic energy
4. zero kinetic energy

MCQ 42: In case of filament lamp at higher voltages, the resistance of lamp

1. decreases
2. increases
3. remains constant
4. varies depending on the filament

MCQ 43: Supply of energy depends upon

1. mass of material
2. the change in temperature
3. the material itself
4. all of above

MCQ 44: There are three equations of uniformly accelerated motion, the odd one out is

1. final_velocity = initial_velocity + (acceleration × time)
2. distance_moved = (initial_velocity × time) + (0.5 × acceleration × time²)
3. final_velocity² = initial_velocity² + (2 × acceleration × distance_moved)
4. final_velocity = initial_velocity + (2 × acceleration × distance_moved)

MCQ 45: If frequency of modulated wave is less than frequency of carrier wave, then input signal is

1. negative
2. positive
3. zero
4. infinite