Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

Ask doubt

Ask doubt


Lens Formula

CBSE X Physics Light - Reflection and Refraction

An object is placed perpendicular to the principal axis of concave lens of focal length 30 cm. Find the position of an image when the object is at a distance 20 cm from the lens.

Asked by jullypradhan001 16th January 2018 8:16 AM
Answer Verified by Expert