An object is placed 20 cm from a diverging lens. If the distance between the lens and the image is 8 cm, what is the magnification?
ایک شے کو ڈائیورنگ لینس سے 20 سینٹی میٹر کے فاصلے پر رکھا جاتا ہے۔ اگر لینس اور تصویر کے درمیان فاصلہ 8 سینٹی میٹر ہے، تو اضافہ کیا ہے؟
Answer: 2/5
Explanation
Apart from the sign,
the magnification factor, m, is equal to i/o
"I" is the image distance from the lens
"o" is the object distance.
we have m=i/o
(8cm) / (20cm)
= 2/5.
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