No products in the cart.

A convex lens of focal length …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

A convex lens of focal length 20cm is placed in front of a convex mirror with principal axis coinciding each other. The distance between the lens and mirror is 10cm. A point object is placed on principal axis at a distance of 60 cm from the convex lens. The image formed by combination, coincides the object itself. The focal length of the convex mirror is ?? .

Posted by Topper Student 3 months, 1 week ago

CBSE > Class 10 > Science

2 answers

Miss. Honey 3 months, 1 week ago

Correct answer is 10. For final image to be formed on the object itself, after refraction from lens the ray should meet the mirror perpendicularly and the image by lens should be on the centre of curvature of mirror R = 30 - 10 = 20 cm Focal length of mirror = R/2 = 10 cm .

0Thank You

Rohan Dhiman 3 months, 1 week ago

Chemistry ch1

0Thank You

ANSWER

Related Questions

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Nitish Kumar Yadav 4 weeks, 1 day ago

CBSE > Class 10 > Science