If a simple pendulum is shifted from Karachi to the peak of K-2 mountain, then its time period

Explanation

The time period of a simple pendulum is determined by the formula T = 2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. As altitude increases, g decreases slightly. Moving a pendulum from Karachi to the peak of K-2 mountain will result in a very small decrease in g. However, this change is minimal and does not significantly affect the time period of the pendulum, so the time period effectively remains the same. Therefore, the correct answer is D:remains the same.. Options A and B are incorrect because the change in g is too small to cause a noticeable increase or decrease in the time period. Option C is incorrect because the time period cannot be zero.