Combination of Thin Lenses in Contact Equivalent Focal length, Power and Magnification  (i) Equivalent focal length of the combination of Le...

Show that the bottom of a water tank appears to be raised. Hence find an expression for the normal shift in the position of an object placed...

Notes : Class 12 Physics Chapter 9 Ray Optics and Optical Instruments - Param Himalaya  Definition and Law of Reflection Sign convention for...

What is a simple microscope ? With the help of a diagram, explain the working of a simple microscope. Also write the uses of simple microsco...

Topic : Define prism , the angle of prism , Refraction Through Prism ,Prism Formula ( Condition for Minimum Deviation Define Prism and the a...

What is a compound microscope ? With the help of a labelled ray diagram, show the image formation by a compound microscope. Derive an expres...

Define Astronomical Telescope , it's construction and principal. Expression for magnifying power ( Angular Magnification) For Distinct V...

Derivation - Lens Maker's Formula | Refraction by a lens - Param Himalaya  Derivation : Consider a lens made of a material of absolute r...

1. Refraction at a Refracting Surface when Object lies in Rarer Medium :  Question : Prove that $\frac{-n_1}{u} + \frac{n_2}{v} = \frac{n_2 ...

TOTAL INTERNAL REFLECTION (TIR) OF LIGHT :  Question: What is total internal reflection and critical angle? State the conditions under which...

Derive a relation between the focal length and radius of curvature stating the assumptions made in the case of a spherical mirror. Assumptio...

Speed of image formed by a spherical mirror related to speed of object. Using mirror formula,  $\frac{1}{u} + \frac{1}{v} = \frac{1}{f}$,  w...

Mirror Formula and Magnification for Convex Mirror :  mirror formula for a convex mirror. Let AB be an object lying on the principal axis of...

Question: Derive mirror formula and Magnification for a concave mirror when a real and virtual image is formed by it. 1. mirror formula and ...

NCERT Solutions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments - Param Himalaya  9.1 A small candle. 2.5 cm in size is pl...