Energy Changes Quiz with Answers PDF Download – Test 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