Of the two hydroxy organic compounds ROH and R'OH, the first one is basic and other is acidic in behaviour. How is R different from R'?

From the first law of thermodynamics derive the relation Cp-Cv =R whwre the symbols have their usual menaings .

Two particles-one of mass m1, and the other of mass m2, carry equal charges. After being accelerated through the same potential difference they enter a region of uniform magnetic field and describe circular paths of radius (r_1) , and (r_2) , respectively. Find the ratio of their masses.

A wire of length L and radius r is fixed at one end and a force F applied to the other end produces an extension l. the extension produced in another wire of same material of length 2L and radius 2r by a force 2F is

(Attempt any ten of the following questions) Define one coulomb charge. Two point charges at a distance r in air exert a force F on each other. At what distance will these charges experience the same force F in a medium of dielectric constant k?

Two organ pipes one open at both ends,and the other open at one end only give their fundamental noteswhose frequencies differ by 25 vibration per second.The length of the open pipre is 96 cm.Calculate the length of the closed pipe if the velocity of sound in air is 330 m(s)^-1 .

From Borjhar Air Port of Guwahati two aeroplanes took off simultaneously, one towards the east with the speed of 720 km. per hour and the other towards the west with the speed of 880 km. per hour. After how many hours will the two aeroplanes be 4000 km. apart? Solve the problem by forming an equation.