(i) All distances parallel to the principal axis are measured from the pole of the mirror. (ii) All the distances measured to the left of the origin (along – x-axis) are taken as positive while those measured to the right ...

Eye related problems generally cured by glass or lenses. Similarly, hypermetropia or farsightedness can be corrected by using convex lens of appropriate power and myopia by concave lens of appropriate power.

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

Generally, light travels in a straight line but in certain condition it bends. When a ray of light passes through the glass slab, but the angle of incidence is to be nearly equal to angle of emergence and greater than ...