関連ワード:
mention two uses of convex lens class 7 state two uses of convex lens class 7 give two uses of convex lens class 7 what are the two uses of convex lens class 7 state the uses of convex lens class 7 give two important uses of convex lens class 7 state any two uses of convex lens class 7 write any two uses of convex lens class 7 give two important uses of concave lens class 7 what are the uses of concave lens class 7
