NEET | किरण प्रकाशिकी एवं प्रकाशिक यंत्र-L1| Ray Optics and Optical Instruments | Ravindra Sir |5PM

Class 12 Physics | Chapter 9 Ray Optics and Optical Instruments | Important Questions & Quick Revision | Part 1

Class 12 Physics | Chapter 9 Ray Optics and Optical Instruments | Important Questions & Quick Revision | Part 2

Class 12 Physics | Chapter 9 Ray Optics and Optical Instruments | Important Questions & Quick Revision | Part 3

( A ) Vernier callipers with 20 divisions on sliding scale, coinciding with 19 main scale divisions ( B ) A screw gauge of pitch 1 mm and 100 divisons on the circular scale ( C ) An optical instrument that can measure length to within a wavelength of light Out of A , B and C the most precise devide for measuring length is

Which of the following is the most precise devise for measuring length ? (a) a Vernier callipers with 20 divisions on the sliding scals, coindiing with 19 main scale divions (b) a screw gauge of pitch 1mm and 100 divisions on the circular scale (c ) an optical instrument that can measure length to within a wave length of light.

A: Ray optics assumes that light travels in a straight line which is disapproved by diffraction effects, yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. R: Typical sizes of apertures involved in ordinary optical instruments are much larger than the wavelength of light.

Optical Instruments 1 Magnifying glass or simple microscope and its properties

Light (प्रकाश)|Ray Optics (किरण प्रकाशिकी )|Laws Of Reflections (परावर्तन के नियम)|OMR

Find the net deviation produced in the incident ray for the optical instrument shown in figure. (Take refractive index of the prism material as 2.)