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Combination of two convex lenses works always as ....... |
Answer» <html><body><p>concave lens<br/> convex lens<br/>rectangular glass slab <br/>plane mirror</p>Solution :<a href="https://interviewquestions.tuteehub.com/tag/equivalent-446407" style="font-weight:bold;" target="_blank" title="Click to know more about EQUIVALENT">EQUIVALENT</a> focal length of combination,<br/>In `<a href="https://interviewquestions.tuteehub.com/tag/f-455800" style="font-weight:bold;" target="_blank" title="Click to know more about F">F</a>=(f_1f_2)/(f_1+f_2)` for concave lens.<br/>`f=((f_1)(f_2))/(f_1+f_2)`<br/>`therefore f=`positive `therefore` <a href="https://interviewquestions.tuteehub.com/tag/works-17618" style="font-weight:bold;" target="_blank" title="Click to know more about WORKS">WORKS</a> as convex lens.</body></html> | |