Total Internal Reflection Multiple Choice Questions (MCQ) PDF - 88

MCQ 436: In periscopes, prisms are positioned to reflect light through

1. 120 ° twice
2. 30 ° twice
3. 45 ° twice
4. 90 ° twice

MCQ 437: The weight of an object usually measured by

1. screw gauge
2. physical balance
3. beam balance or calibrated electronic balance
4. spring balance/compression balance

MCQ 438: The energy output is always less than the energy input, because

1. pollution in the air
2. temperature changes
3. energy dissipated
4. none of the above

MCQ 439: On Earth, the gravitational field strength is about

1. 20 N kg^-1
2. 10 N kg^-1
3. 15 N kg^-1
4. 30 N kg^-1

MCQ 440: The state of matter which is compressible is

1. liquid
2. solid
3. both solid and liquid
4. gas