Converging Lens Quiz Questions and Answers PDF - 29

MCQ 141: The lens which is thick at the center but thin at the edges is called

1. counter lens
2. fiber lens
3. converging lens
4. diverging lens

MCQ 142: The change of state from liquid to solid without a change in temperature is known as

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

MCQ 143: A filament bulb rated at 30 W, coverts 15% of its electrical energy supply into light energy. Calculate the quantity of light energy emitted in 10 minutes.

1. 1.8 kJ
2. 1.2 kJ
3. 1.5 kJ
4. 2.4 kJ

MCQ 144: By knowing the magnitude of the force and its perpendicular distance from the pivot, we can measure the

1. turning effect
2. force applied
3. area of the door
4. size of the door

MCQ 145: In metals, a much faster mechanism of thermal energy transfer is called

1. free electrons diffusion
2. free neutrons diffusion
3. free protons diffusion
4. free electrons conversion