All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2008 Physics

Q. 17. Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross sectional area A = 10 cm² and length = 20 cm. If one of the solenoids has 300 turns and the other 400 turns, their mutual inductance is

Sol:

Q. 18. A capillary tube (A) is dipped in water. Another identical tube (B) is dipped in a soap-water solution. Which of the following shows the relative nature of the liquid columns in the two tubes?

Sol: Surface tension of water is more than soap solution.

Correct choice: (1)