Sarthaks Test
0 votes
11 views
ago in Ray Optics and Optical Instruments by (16.2k points)
closed ago by

A convex lens produces an inverted image of size 1.4 cm The size of object is 0.7 cm

1. What is magnification in the case

2. What is the nature of image

3. If the object is at distance 30 cm from the lens calculate focal length of the lens

1 Answer

+1 vote
ago by (17.1k points)
selected ago by
 
Best answer

1. m = \(\frac{h_0}{h_1}\)  \(\frac{-1.4}{0.7}\) = -2

2. Real, inverted, magnified 

3. m = \(\frac{f}{f+u}\) ; -2 = \(\frac{f}{f+-30}\) ,f = 20 cm

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.

...