BEATS: INTERFERNCE IN TIME

Assertion : In the phenomenon called "Beats", intensity of sound becomes maximum 2 (f _(1) ~f _(2)) times in a unit time. Reason: No. of beats per unit time is (f _(1) ~ f _(2))

Fill in the blanks: The heart of a healthy human being beats _____________ times per minute.

In a 1 km race, A beats B by 30 seconds and B beats C by 15 seconds. If A beats C by 180 m, Find the time taken by A to run 1 km.

Assertion : Beats can be formed when the diffference in freqencies of two sources is greater than 10. Reason : Time interval between two beats should be less than 1/10 seconds to hear distinct beats.

The avarage life of an Indian is 56 years .Find the number of times the human heart beats in the life of an Indian ,If the heat beats once in 0.8 s.

Heart beat || Origin OF Heart Beat || Conduction OF Heart Beat || Regulation OF Heart Beat

A human heart beats 72 times in a minute. The beat frequency is

In case of interfernce of light _________ remains conserved [ Fill in the blank].