चस्माको प्रयोग नगरी दृष्टिदोष सुधार्ने कुनै एक उपाय लेख्नुहोस् । Write any one way for the correction of defect of vision without using spectacles.
SEE Class 10 Science · 2081 · Solved Question with Answer
चस्माको प्रयोग नगरी दृष्टिदोष सुधार्ने कुनै एक उपाय लेख्नुहोस् ।
Write any one way for the correction of defect of vision without using spectacles.
