# MCQ

## A simple pendulum with length L and mass M of the bob is vibrating with amplitude a. Then the maximum tension in the string is

For bob to move in a circular path, the tension is maximum at the lower point. (i.e. at mean position). The maximum tension on the string can be calculated as follow:

## A pendulum clock, which keeps correct time at sea level, loses 15 s per day when taken to the top of mountain. If the radius of the earth is 6400 km, the height of the mountain is:

A pendulum clock, which keeps correct time at sea level, loses 15 s per day when taken tot he top of mountain. If the radius of the earth is 6400 km, the height of the mountain is:

## Two simple pendulums of time period 2 sec and 2.1 sec are made to vibrate simultaneously. They are in phase initially. After how many vibrations they are in the same phase?

Two simple pendulums of time period 2 sec and 2.1 sec are made to vibrate simultaneously. They are in phase initially. After how many vibrations they are in the same phase?

## A particle undergoes SHM having a time period T. The time taken in completing 3\8 oscillation from the mean position is

A particle undergoes SHM having a time period T. The time taken in completing 3\8 oscillation from the mean position is

## A fan makes 10 revolutions in 3 second which is just switched on. Considering uniform acceleration the number of revolution made by the fan in next 3 seconds is

A fan makes 10 revolutions in 3 second which is just switched on. Considering uniform acceleration the number of revolution made by the fan in next 3 seconds is