No products in the cart.

Explain why are there two principal …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now

Explain why are there two principal focus in case of spherical lenses

Posted by Laxmipriya Nayak 5 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Ishan Chahaliya 5 years, 4 months ago

Because they are bispherical lenses, i.e they have two spherical sides (concave or canvex)

0Thank You

Gaurav Seth 5 years, 4 months ago

lens is made up of two such transparent mirrors , hence when we consider its principle focus both of them are considered. also if the lens has only one focus then a ray diagram is not possible as when the incident ray is at infinity then the light rays cannot converge at the focus of the lens( which is before the lens or on its left side) as the lens undergoes refraction and not reflection.

0Thank You

ANSWER

Test

Related Questions

A current of 5 mili mpr is passing through a wire how many electrons are passing through per minute through the area of cross section of the wire

Posted by Sahana Laskar 10 months, 1 week ago

CBSE > Class 10 > Science

0 answers

What is the function of petal and sepal.

Posted by Surya Kumar 1 year, 4 months ago

CBSE > Class 10 > Science

1 answers

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 Pandey Ji 5 months, 4 weeks ago

CBSE > Class 10 > Science