Write the principle, working and uses of spectrophotometer. (UPSC 2016, 10 Marks, )

स्पेक्ट्रोफोटोमीटर के सिद्धांत, कार्य और उपयोग लिखें। (Write the principle, working and uses of spectrophotometer.)

Write the principle, working and uses of spectrophotometer. (UPSC 2016, 10 Marks, ) EN ह function dochangelang(val) { if (val != "") { window.location = val; } }