0

Guest

Courses New

An objecobject 2.4m in front of a lens forms a sharp image on a film 12cm behind the lens. A glass plate 1cm thick,of refractive index 1.5 is interposed between lens and film with its plane faces parallel to the film. At what distance from the lens should object shifted to be in sharp focus of the film?

An objecobject 2.4m in front of a lens forms a sharp image on a film 12cm behind the lens. A glass plate 1cm thick,of refractive index 1.5 is interposed between lens and film with its plane faces parallel to the film. At what distance from the lens should object shifted to be in sharp focus of the film?

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago

Case I:

u = –240 cm and v = 12 cm

Using Lens formula

1/f = 7/80

Case II:

v = 12 – (1/3) = (35/3) [normal shift = 1 - (2/3) = 1/3]

f = 7/80

u = 5.6

Think You Can Provide A Better Answer ?

Other Related Questions on Discuss with Askiitians Tutors

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More