Can we always call the second harmonic as the first overtone? Give examples.

The second overtone of an open pipe has the same frequency as the first overtone of a closed pipe 2 m long. The length of the open pipe is

The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L metre long. The length of the open pipe will be

Two dimensional close packed structure can be generated by stacking the rows of close packed spheres. This can be done in two different ways. (I) The second row may be placed in contact with the first one, such that the spheres of the second row are exactly above those of first row. The spheres of the two rows are aligned vertically as well as horizontally. If we call the first row as 'A' type of row, the second row being exactly same as the first one is also of 'A' type. Similarly, we may place more rows to obtain AAAA.... type arrangement (II) In this type, the second row may be placed above the first one in a staggered manner such that its spheres. fit in depressions of first row. if the arrangement of spheres in the first row is called 'A' type the one in the second row is different and may be called 'B' type. When the third row is placed adjacent to the second in staggered manner, its spheres are aligned with those of first layer. Hence this layer is also 'A' type. The spheres of similarly placed fourth row will be aligned with those of the second row ('B' type). Hence this arrangement is of ABAB.... type The type of voids generated in type (I) & (II) respectively are

Can a substance exist in all the three states of matter? Give an example.

Which type of compound can form micelles? Give example

Two uniform strings A and B made of steel are made to vibrate under the same tension. If the first overtone of A is equal to the second overtone of B and if the radius of A is twice that of B , the ratio of the lengths of the strings is

Three simple harmonic motions of equal amplitudes A and equal time periods in the same direction combine. The phase of the second motion is 60^@ ahead of the first and the phase of the third motion is 60^@ ahead of the second. Find the amplitude of the resultant motion.

A pipe of length l_(1) , closed at one end is kept in a chamber of gas of density rho_(1) . A second pipe open at both ends is placed in a second chamber of gas of density rho_(2) . The compressibility of both the gases is equal. Calculate the length of the second pipe if frquency of first overtone in both the cases is equal.

A pipe of length l_(1) , closed at one end is kept in a chamber of gas of density rho_(1) . A second pipe open at both ends is placed in a second chamber of gas of density rho_(2) . The compressibility of both the gases is equal. Calculate the length of the second pipe if frquency of first overtone in both the cases is equal.