Physics project class 10 cbse, Study Guides, Projects, Research of Physics

Download Physics project class 10 cbse and more Study Guides, Projects, Research Physics in PDF only on Docsity! PODAR INTERNATIONAL SCHOOL CBSE DETERMINATION OF REFRACTIVE INDICES OF VARIOUS LIQUIDS USING A HOLLOW PRISM A physics investigatory project by: Aarya Mittal Class: XI B By Shiven Shanmugananthan, Class XI-B, Roll number 27 1 | P a g e Roll no.: 03 CERTIFICATE This is to certify that Aarya Mittal of class XI-B Roll no. 03 of Podar International School CBSE has satisfactorily completed his physics investigatory project as prescribed by the CBSE during the academic year 2022-2023. Mrs. Jibi J. Philip Principal (Physics Teacher) Podar International School CBSE, Navi Mumbai By Shiven Shanmugananthan, Class XI-B, Roll number 27 2 | P a g e INTRODUCTION A prism is a three-dimensional solid object in which two ends are identical. It is an amalgam of flat faces, symmetrical bases, and equal cross-sections. The faces of a prism are parallelograms or rectangles without bases. When we come to talk about a hollow prism, it is nothing, but a prism made using a glass plate with the centre part of the prism vacant. This cavity can be filled with gas or other fluids. Thus, a hollow prism is also commonly called a fluid prism. The objective of our project is to find out the refractive indices of three liquids that are water, carbon disulphide, and benzaldehyde with the aid of a hollow prism and some basic formulas. By Shiven Shanmugananthan, Class XI-B, Roll number 27 5 | P a g e THEORY A prism is a transparent optical element with flat, polished surfaces that refract light. Prisms can be made from any material that is transparent including glass, plastic, and fluorite. A prism can be used to break light up into its constituent spectral colours. Prisms can also be used to reflect light or to split light into components with different polarizations. The refractive index of the liquid Is given by the formula: U=sin i/sin r=sin((a+d)/2)/sin(a/2) Where, U=refractive index of the liquid. a= the angle of minimum deviation d=angle of prism i=angle of incidence r=angle of refraction By Shiven Shanmugananthan, Class XI-B, Roll number 27 6 | P a g e AIM To find out the refractive indices of different liquids using a hollow prism APPARATUS REQUIRED  Hollow glass prism  Various liquids like water, carbon disulphide, benzaldehyde etc.  Bell pins  Drawing board By Shiven Shanmugananthan, Class XI-B, Roll number 27 7 | P a g e  Dil. Sulphuric Acid S.no a º (angle of the prism) i º (angle of incidence) d º (angle of deviation) 1 60 20 33 2 60 30 30 3 60 35 25 4 60 40 29 5 60 45 30 U=sin ((60+25)/2)/sin (30) = 1.351 By Shiven Shanmugananthan, Class XI-B, Roll number 27 10 | P a g e CONCLUSION Refractive indices at room temperature:  Benzaldehyde o Actual: 1.546 o Experimental: 1.504 o  Water o Actual: 1.33 o Experimental: 1.306 o  Dil. Sulphuric acid o Actual: 1.355 o Experimental: 1.351 By Shiven Shanmugananthan, Class XI-B, Roll number 27 11 | P a g e PRECAUTIONS  The angle of incidence should lie b/w 35-60 degrees.    Pins should be vertically fixed and should lie in the same line.     Distance b/w two points should not be less than 10mm.   The same angle of the prism should be used for all observations.     The arrowhead should be marked to represent emergent and incident rays.  BIBLIOGRAPHY By Shiven Shanmugananthan, Class XI-B, Roll number 27 12 | P a g e