Q 1(b). Discuss in brief the characteristic optical properties of hornblende and augite under petrological microscope. (UPSC 2025, 10 Marks, 150 Words)

Theme: Optical Properties of Hornblende and Augite Where in Syllabus: (The subject of the above question is Petrology.)

हॉर्नब्लेंड और अगाइट के शैलविज्ञान सूक्ष्मदर्शी प्रकाशीय लक्षणात्मक गुणों की संक्षेप में विवेचना कीजिए।

Q 1(b). Discuss in brief the characteristic optical properties of hornblende and augite under petrological microscope. (UPSC 2025, 10 Marks, 150 Words) EN ह function dochangelang(val) { if (val != "") { window.location = val; } }