CBSE Class 10 Answered
i wanted to know about first principal focus and second principal focus .
Asked by Shagun Rastogi | 14 Mar, 2015, 07:05: PM
Expert Answer
First principal focus:
First principal focus of a lens is that point on the principal axis of the lens at which if an object is placed, the image would be formed at infinity.
It is denoted by F1.
Putting, u=-f1 and v= in the above equation, we get,
Second Principal Focus:
Second principal focus of a lens is that point on the principal axis of the lens where the image is formed when the object is at infinity.
It is denoted by F2.
Putting, u=- and v=f2 in the above equation, we get,
Answered by Faiza Lambe | 16 Mar, 2015, 09:49: AM
Application Videos
Concept Videos
CBSE 10 - Physics
Asked by subrasixty | 13 Jan, 2024, 05:05: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by bubbynaik77 | 29 Sep, 2023, 09:34: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by rk9154247 | 01 Jun, 2021, 02:25: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by lbalarajulbalaraju2 | 01 Jun, 2021, 11:09: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by viraat.verma26 | 14 May, 2021, 01:10: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by arjukesharwani2006 | 25 Jul, 2020, 03:50: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by craj.fru | 02 Sep, 2019, 09:45: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by muchu.mkk12345 | 21 Jul, 2019, 10:53: AM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by lokendersikarwar6 | 10 Jun, 2019, 12:33: PM
ANSWERED BY EXPERT