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Plus Two Physics

Spherical Mirror Problem

A rear view mirror used in a bus has a radius of curvature 3.5 m. If the driver of the bus locates a car at 10.0m behind the bus, find the position, nature and size of the image of the car. Ans: f = r/2=-1.75 m u=-10m v=?

Categories
Plus Two Physics

Dual nature of light and related questions

How light has a dual nature? A photon has zero rest mass. Explain how ? (These questions were posted by Shubham SInha  and Ritika Chatak) Answer: The dual nature of light has been established through the various theories in an attempt to find out the real nature of light. The first theory on the nature of […]

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Plus Two Physics

Numerical problem from image formation by spherical mirror – optics

An object is placed 18cm in front of a spherical mirror. if the image formed is 4cm to the right of the mirror calculate the focal length and radius of curvature? what is the nature of the mirror? (The question was posted by Anisha)

Categories
Plus Two Physics

CHAPTERWISE REVISION QUESTIONS FOR CBSE CLASS XII

Electrostatics ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT CURRENT ELECTRICITY EM WAVES DUAL NATURE ATOMS AND NUCLEI Ray Optics wave optics SEMICONDUCTOR DEVICES communication system