0 votes
in Physics by (58.1k points)
closed by

Rays from the sun converge at a point 15 cm in front of a concave mirror. Where an object should be placed, so that its image formed is equal to the size of the object?

1 Answer

+1 vote
by (54.0k points)
selected by
Best answer

The rays from sun coming from infinity are parallel to principal axis after reflection they converge at a point, known as focus. Therefore, focal length (F) of concave mirror is 15 cm. 

And we know that same size, real and inverted image is formed by concave mirror when object is placed at centre of curvature = 2×Focal length (F). So to form same size image object will be placed at 15x2 = 30cm.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.