We know that zinc layer prevents iron from getting rusted. Through galvanization method, iron is covered by a coat of zinc. Where there is no chance to corrosion of Iron metal.

The incident rays coming from the distant tree placed will be parallel to the principal axis and as we know the rays parallel to the principal axis, after refraction by convex lens, will pass through the principal focus. Therefore, a ...

Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions Class 10th Science Session 2022-23