Question

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Answer 1

Answer:

1 Bunsen burner and Candles

2 Blindness can be caused due to numerous conditions, the leading causes are: The leading causes of chronic blindness include cataract, refractive errors, glaucoma, corneal opacities, age-related macular degeneration, trachoma, childhood blindness and diabetic retinopathy.

3 When two plane mirrors are kept perpendicular to each other as shown (O is the point object), 3 images will be formed

4 I didn't know

5 Curable blindness: That stage of blindness where the damage is reversible by prompt management