HOT Que.Series 25Aug Physics Stationary Waves

Two wires of same material and radii r and 2r respectively are welded together end to end. The combination is used as a sonometer wire and kept under tension T. the welded point is mid-way between the two bridges. When stationary waves are set up in the composite wire, the joint is a node. Then the ratio of the number of loops formed in the thinner to thicker wire is,

A tuning fork of frequency 480 Hz is in unison with pipe closed at one end vibrating in its first overtone. Then fundamental frequency of the pipe is

A pipe closed at one end vibrating in 5^th overtone is in unison with open pipe vibrating in its 5^th overtone. The ratio of l_c : l_o is.

An open organ pipe has a fundamental frequency of 300 Hz. The first overtone of this organ pipe is the same as the first overtone of a closed organ pipe. The length of the closed organ pipe is

In Meld’s experiment, the string vibrates in 4 loops when a 50 gram weight is placed in the pan of weight 15 gram. The make the string to vibrate is 6 loops the weight that has to be removed from the pan is

The frequency of the second overtone of a closed pipe

is in unison with the third overtone of an open pipe

other ratio of lengths of the pipe is

If n₁ is the resonance frequency of a pipe open at both ends and n₂ the resonance frequency of pipe open at one ends only, and both are vibrating in the fundamental mode and the pipes are of the same length, then

Two closed pipe produces 10 beats per second when emitting their fundamental nodes. If their lengths are in the ratio of 25: 26 their fundamental frequency in Hz are

Two identical straight wires are stretched so as to produce 6 beats per second when vibrating simultaneously. On changing the tension slightly in one of them, the beats frequency remains unchanged. Denoting by T1​,T2​ the higher and the lower initial tensions in the strings (T1​>T2​), then it could be said that while making the above changes in tension

Standing waves are produced by the superposition of two waves given by y₁ = 0.4 sin 2pand

y₂ = 0.4 sin 2pwhere all the quantities are expressed in SI units. What is the amplitude of a particle at x = 0.05 m?