State Joule's law of heating and verify it experimentally.
What do you mean by shunt? Describe its use in converting a galvanometer into an ammeter.
What is the difference between unpolarized and polarized light?
How wide is the central diffraction peak on a screen 5 m behind a 0.01 mm slit illuminated by 500 mm light source?
Describe Netwon's ring experiment and derive expression for wavelength of light.
Describe an experiment to demonstrate that the light is necessary for the process of photosynthesis with clean diagram.
What are the significances of respiration in plants? Explain in detail.
Describe the Foucault's method of determining the speed of the light.
State Huygen's principle. Does it apply to sound wave in air?
What is Doppler's effect? Derive an expression for the apparent frequency received by a stationary observer when a source of sound is moving away from the observer.