Frequency of L-C circuit is `f_(1)`. If a resistance R is also added to it the frequency becomes `f_(2)`. The ratio of `(f_(1))/(f_(1))` will be.

Frequency of L-C circuit is f_(1) . If a resistance R is also added to it the frequency becomes f_(2) . The ratio of (f_(2))/(f_(1)) will be.

If frequency of R- L circuit is f then impedence will be

If frequency of R- L circuit is f then impedence will be

A pipe opened at both ends prpduces a note of frequency f_(1) . When the pipe is kept with 3/4th of its length in water, it produces a note of frequency f_(2) . The ratio f_(1)/f_(2) is

A pipe opened at both ends prpduces a note of frequency f_(1) . When the pipe is kept with 3/4th of its length in water, it produces a note of frequency f_(2) . The ratio f_(1)/f_(2) is

A train moves towards a stationary observer with speed 34m/s. The train sounds a whistle and its frequency registered by observer is f_(1) . If the trains speed is reduced to 17m/s, the frequency registered is f_(2) . If the speed of sound is 340m/s, then the ratio (f_(1))/(f_(2)) is