State and explain Joule's law of heating. Deduce an expression for heat developed in a conductor due to the passage of an electric current.
Discuss the Fraunhofer diffraction in a single slit.
In Newton's rings experiment, the diameter of the 15th ring was 0.336. Calculate the radius of curvature of the plano-convex lens if the wavelength of light used is 5880 Å
What are the different types of transpiration? Explain all in brief.
Write short notes on the structural and the functional aspects of stomata.
Describe Michelson's method for determining the speed of light.
What are the differences between wavefront and wavelet?
What is Doppler's Effect? Derive an expression for the apparent frequency when a source of sound and the observer are moving towards each other.
Why is the voice of women more sharp or intelligible than that of a man?
What are harmonics? Explain the formation of overtones in an open and a closed organ pipe.
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