Advertisements
Advertisements
प्रश्न
The power of a lens is +2.0 D. Find its focal length and state what kind of lens it is.
संख्यात्मक
एका वाक्यात उत्तर
Advertisements
उत्तर
Focal length (in metres) = `1/"power(in dioptres)"`
Focal length (in metres) = `1/2` = 0.5m = 50 cm
Since, the focal length is positive, the lens is aconvex lens.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
