Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

what is a porroprism?
Asked by sanrachna | 27 Feb, 2011, 05:39: PM
Expert Answer
Dear student

In optics, a Porro prism, named for its inventor Ignazio Porro, is a type of reflection prism used in optical instruments to alter the orientation of an image.

It consists of a block of glass shaped as a right geometric prism with right-angled triangular end faces. In operation, light enters the large rectangular face of the prism, undergoes total internal reflection twice from the sloped faces, and exits again through the large rectangular face. Because the light exits and enters the glass only at normal incidence, the prism is not dispersive.

An image travelling through a Porro prism is rotated by 180° and exits in the opposite direction offset from its entrance point. Since the image is reflected twice, the handedness of the image is unchanged.

 Hope this clarifies your doubt.

Regards

Team

Topperlearning

Answered by | 27 Feb, 2011, 04:56: PM
CBSE 12-science - Physics
Asked by gazanfarali5782 | 09 Jan, 2023, 03:21: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by zahirqk | 08 Jan, 2023, 09:50: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by tannudahiya80536 | 20 Dec, 2022, 01:13: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by advssdrall | 30 Oct, 2022, 10:06: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by hanskaraja | 05 Aug, 2022, 11:20: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by arpitarout132 | 29 Apr, 2022, 01:12: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by kamleshstarone392 | 16 Apr, 2022, 06:26: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by upasonamandal7 | 31 Jan, 2022, 10:35: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by upasonamandal7 | 28 Jan, 2022, 10:15: AM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by parjapati16062003 | 10 Jan, 2022, 10:12: AM
ANSWERED BY EXPERT
Get FREE Sample Mock Papers for Final Exams
Download Now
×