wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

A microscope is focused on an ink mark on the top of a table. If we place a glass slab 3cm thick on it, how should the microscope be moved to focus the ink spot again? The refractive index of glass slab is 1.5 cm.


A

2 cm upwards

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

1 cm downwards

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

2 cm downward

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

1 cm upwards

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D

1 cm upwards


The image of the ink spot moves up by 1cm.
Refractive index = Real depth/ apparent depth

1.5 = 3/ apparent depth

Apparent depth = 3/1.5 = 2 cm

Distance through which the microscope is moved is 3 cm -2 cm = 1 cm upwards


flag
Suggest Corrections
thumbs-up
4
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Optical Path
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon