Hey guys if you have done …

In the practical examination along with experiments you have to face viva voce from the internal / external examiner. It is just to know your depth of knowledge and understanding of the subject. Based on your performance you will be credited with the deserving score. Do prepare well. The possible questions are as under. Please remember these questions will be in continuation to your response to the examiner's queries: 1) Why are the resistance used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,5000 etc? 2) Why wire is double folded in resistance box? 3) Name the physical quantities to be kept constant for Ohm's law to be true? 4) State the principle of a potentiometer? 5) How can we increase the sensitivity of a potentiometer? 6) Define figure of merit of a galvanometer? Which has more resistance, a galvanometer or a millimeter? 7) How does an LED emit light? 8) What is the difference between an ordinary diode and an LED? 9) Define principle axis of a convex lens? 10) What happens to the focal length of a concave mirror if it is immersed in water? 11) What are the factors affecting the internal resistance of a cell? 12) What are the differences between primary and secondary cell? 13) Why can't we use a dry cell for starting a car? 14) Define spherical aberration and draw diagram to show it in case of a concave mirror? 15) What is parallax? How is it removed? 16) Define dispersion of light, give its cause? 17) Show dispersion of white light into seven colors? 18) Define lateral displacements and give the factor on which it depends? 19) Define critical angle and deduce the relstion between refractive index and critical angle? 20) Explain U-V graph in case of image formation in a convex lens? 21) Distinguish between primary and secondary cell, give two differences? 22) How does rheostat act as a variable resistor, potential divider? Illustrate with a diagram? 23) What is a non inductive coil? Give one special feature of non inductive cool? 24) Draw a neat and label diagram of Leclanche cell? 25) Write chemical equation in Daniel cell? 26) Why is the emf of auxiliary battery greater than the emf to be measured? 27) Why are standard resistances made up of constantan and Manganin? 28) Define figure of merit and give its SI unit?

Thanks anisha and divyansh.

Your teacher will ask you questions related to practical given to you for your written practical.... Questions like least count, pitch, refractive index, dispersion, scattering, and remember learn all the formulas of the practicals given in practical book.... Also questions will be asked from your whole physics syllabus... Like work energy theorem, stationery waves, dopler effect, newton's all three laws, capillary action and gravitational law.... And much more formulas...best of luck kriti... ????

Which types of waves are there in sono meter

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