The output energy of a real life machine is less than input energy because of :
- Amoving pats of machine
- Bfriction at the moving parts
- ✓both (a) and (b)
- Dnone of these
Answer: C.
View full solution →34 questions across 7 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.
MCQ
4 Q→02[1 Mark Question Answer]
13 Q→03[2 Mark Question Answer]
4 Q→04[3 Mark Question Answer]
2 Q→05fill in the blanks.
5 Q→06TRUE / FALSE
5 Q→07Match the following.
1 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Answer: C.
View full solution →Answer: B.
View full solution →Answer: C.
View full solution →Answer: C.
View full solution →| Column A | Column B |
| 1. A machine whose parts are frictionless as well as weightless. | (a) Simple machine |
| 2. In an device, output energy is less than input energy. | (b) Ideal machine |
| 3. The ratio between the output energy and the input energy. | (c) Machine |
| 4. The machine such as handle of water pump or a ramp. | (d) Principle of machine |
| (e) Efficiency of machine |
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