wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A real object is placed at 5 cm from a concave mirror. A plane mirror is set so that the virtual image formed by it coincide with the real image formed by concave mirror. If the plane mirror is at a distance of 7.5 cm from the object, then the focal length of the concave mirror is

एक वास्तविक वस्तु को एक अवतल दर्पण से 5 cm की दूरी पर रखा जाता है। एक समतल दर्पण को इस प्रकार व्यवस्थित किया जाता है कि इसके द्वारा निर्मित आभासी प्रतिबिम्ब, अवतल दर्पण द्वारा निर्मित वास्तविक प्रतिबिम्ब के सम्पाती हो। यदि समतल दर्पण, वस्तु से 7.5 cm की दूरी पर है, तब अवतल दर्पण की फोकस दूरी है

A
5 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
4 cm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
3 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 4 cm
Solution

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Spherical Mirrors
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon