A pendulum beats faster than a standard pendulum. In order to bring it to the standard beat, the length of the pendulum is to be

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Q: 98 (NDA-II/2010)
A pendulum beats faster than a standard pendulum. In order to bring it to the standard beat, the length of the pendulum is to be

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,8,12,8,8,3,1

keywords: 

{'pendulum beats': [0, 0, 1, 0], 'pendulum': [0, 0, 0, 3], 'standard pendulum': [0, 0, 1, 0], 'standard beat': [0, 0, 1, 0], 'length': [0, 0, 1, 0], 'mass': [0, 0, 2, 3], 'bob': [0, 0, 1, 2]}

The correct answer is option 2: increased.

When a pendulum beats faster than the standard beat, it means that it takes less time for each swing. This can happen when the length of the pendulum is shorter than the standard length.

The time it takes for a pendulum to complete one full swing is directly proportional to the length of the pendulum. So, if we want to bring a faster beating pendulum to the standard beat, we need to increase the length of the pendulum.

By increasing the length, the time taken for each swing will increase, and the pendulum will beat at the standard rate. It is important to note that changing the mass of the bob (the weight at the end of the pendulum) or reducing both the length and mass (option 3 or 4) will not bring the pendulum to the standard beat.

Therefore, the best solution is to increase the length of the pendulum.