Two stretched strings A and B when vibrated together produce 4 beats per second. If the tension applied to string A is increased, the number of beats produced per second increases to 7. If the initial frequency of string B is 480 Hz, the initial frequency of string A is:

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?

Who led the Non-Cooperation Movement in India?