Chapter 9: Ray Optics and Optical Instruments Important Formulas Chapter 10 - Wave Optics In chapter 10, the most important concept is Huygen’s laws of reflection and refraction. This topic has the highest weightage of marks from this chapter. Other concepts in this chapter include Brewster’...
This NCERT Solutions Class 12 Physics chapter builds a foundation in ray optics and various instruments related to it. A total of 9 topics are there in this chapter to discuss on ray optics and various optical instruments. This includes total internal reflection, spherical mirrors, refraction, and...
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20. A conducting sphere of radius $10cm$ has an unknown charge. If the electric field at a point $20cm$ from the centre of the sphere of magnitude $1.5\times {{10}^{3}}N/C$ is directed radially inward, what is the net charge on the sphere?
Class 12 Electrostatic Potential and Capacitance NCERT Exemplar Solution Chapter-Specific NCERT Solutions for Class 12 Physics Given below are the chapter-wise NCERT Solutions for Class 12 Physics. Go through these chapter-wise solutions to be thoroughly familiar with the concepts. S....
Question 50: For what distance is ray optics is a good approximation when the aperture is 4 mm and the wavelength of light is 400 𝜂 m?a. 24 m b. 40 m c. 18 m d. 30 m Solution: Answer: (abcd) Aperture width a = 4mm = 4 × 10-3m Wavelength λ = 400nm = 400 × 10...