InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Owoc 0 C.A Q.3. The image of a candle flame placed at a distanceof 30 cm from a mirror is formed on a screenplaced in front of the mirror at a distance of60 cm from its pole. What is the nature of themirror ? Find its focal length. If the height ofthe flame is 2.4 cm, find the height of its image.State whether the image formed is erect orinverted.[Delhi 31/1/3 2017 |
| Answer» <html><body><p></p><p></p><p>The distance of the <a href="https://interviewquestions.tuteehub.com/tag/object-11416" style="font-weight:bold;" target="_blank" title="Click to know more about OBJECT">OBJECT</a> from the mirror, u = -30 cm</p><p></p><p>The distance of the image from the mirror, v = -60 cm</p><p></p><p>To find the foca <a href="https://interviewquestions.tuteehub.com/tag/length-1071524" style="font-weight:bold;" target="_blank" title="Click to know more about LENGTH">LENGTH</a>, we will <a href="https://interviewquestions.tuteehub.com/tag/use-1441041" style="font-weight:bold;" target="_blank" title="Click to know more about USE">USE</a> the formula:</p><p></p><p>Since, the focal length is negative, the nature of the mirror is convex i.e. it is a diverging mirror.</p><p></p><p>The focal length of the mirror is = -20 cm</p><p></p><p>The height of the flame = 2.4 cm</p><p></p><p>The height of its image would be:</p><p></p><p>Thus, the height of the image would be 4.8 cm.</p><p></p><p>The image would be real and <a href="https://interviewquestions.tuteehub.com/tag/inverted-2133128" style="font-weight:bold;" target="_blank" title="Click to know more about INVERTED">INVERTED</a>.</p><p></p><p></p><p></p><p></p></body></html> | |