A bar magnet of length L is dropped inside a vertical copper pipe of length `l(l lt L)`, it will experience an acceleration q such that

An open organ pipe of length l is sounded together with another open organ pipe of length l + x in their fundamental tones. Speed of sound in air is v. the beat frequency heard will be ( x lt lt l )

An open organ pipe of length l is sounded together with another open organ pipe of length l + x in their fundamental tones. Speed of sound in air is v. the beat frequency heard will be ( x lt lt l )

An open organ pipe of length l is sounded together with another open organ pipe of length l + x in their fundamental tones. Speed of sound in air is v . The beat frequency heard will be (x lt lt l) :

A thin bar magnet of length L is bent in the middle to from an angle of 60^(@) . The new length of the magnet is .

An open pipe of length l vibrates in fundamental mode. The pressure variation is maximum at

A wire of length L is drawn to a length 2L, then its resistance will.

The length of a wire required to make a solenoid of length l and self - induction L is