Q. 205.0( 2 Votes )

Analyse the follo

Answer :

When an object is placed at 2F1 of a convex lens, image is formed at the opposite 2F2 point. For this mirror 2F = 30 cm, we get f = + 15 cm.


ii. Clearly the observation no. 6 is wrong as the image distance should have been negative but it is given that it is positive.


This is so because a convex lens produces a virtual image when the object is between focus and the optical centre.


iii. Magnification is given by,




OR



i. The two rays are originating from the top of the object. One is passing through the spherical centre of the mirror and the other ray is passing through the pole of the mirror.


ii. Magnification is given by,




So the distance between the screen and the object is 60-20 = 40 cm.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Final Mock TestFinal Mock TestFinal Mock Test44 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

List the new CartAll In One Science

List the sign conAll In One Science

Draw a diagram toLakhmir Singh & Manjit Kaur - Physics

State and explainLakhmir Singh & Manjit Kaur - Physics

What type of lensLakhmir Singh & Manjit Kaur - Physics

Your eye containsLakhmir Singh & Manjit Kaur - Physics

A dentist uses a All In One Science

What type of mirrLakhmir Singh & Manjit Kaur - Physics

Give two uses of Lakhmir Singh & Manjit Kaur - Physics