MCQ
In the phenomenon of work done by variable forces, the forces:
- ARemain constant.
- BDon't remain constant.
- CIncrease.
- DDecrease.
Explanation:
The variable forces are the non-constant forces that changes with maybe time, distance or any other variable.
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Statement $I :$ A second's pendulum has a time period of $1$ second.
Statement $II :$ It takes precisely one second to move between the two extreme positions.
In the light of the above statements, choose the correct answer from the options given below: