[" Two pipes "P_(1)" and "P_(2)" are closed and open respectively.Pi has a length of "0.3m" .Find the length of "P_(2)" ,if "],[" third harmonic of "P" is same as first harmonic of "P_(2)" ."]

Two pipes P_(1) and P_(2) are closed and open respectively. P_(1) has a length of 0.3 m . Find the length of P_(2) , if third harmonic of P_(1) is same as first harmonic of P_(2) .

Two pipes P_(1) and P_(2) are closed and open respectively. P_(1) has a length of 0.3 m . Find the length of P_(2) , if third harmonic of P_(1) is same as first harmonic of P_(2) .

The fundamental frequencies of two wires P and Q are 200 Hz and 335 Hz respectively. How many beats could be heard by 5th harmonic of P and third harmonic of Q in 2 s ?

Two Polaroids P_(1) and P_(2) are placed with their axis perpendicular to eachother. Unpolarised light I_(0) is nicident on P_(1) . A third polaroid P_(3) is kept in between P_(1) and P_(2) such that its axis makes an angle 45^(@) with that of P_(1) . The intensity of transmitted light through P_(2) is

Two Polaroids P_(1) and P_(2) are placed with their axis perpendicular to eachother. Unpolarised light I_(0) is nicident on P_(1) . A third polaroid P_(3) is kept in between P_(1) and P_(2) such that its axis makes an angle 45^(@) with that of P_(1) . The intensity of transmitted light through P_(2) is

Two Polaroids P_(1) and P_(2) are placed with their axis perpendicular to eachother. Unpolarised light I_(0) is nicident on P_(1) . A third polaroid P_(3) is kept in between P_(1) and P_(2) such that its axis makes an angle 45^(@) with that of P_(1) . The intensity of transmitted light through P_(2) is