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Laxman Verma

Generally, Clove oil is an olfactory indicator. These are the substances which have one type of scent as acidic way so a visually challenged student prefers to use clove oil as an acid-base indicator.

Nandini

(i) Light will bend towards the normal in the glass slab. (ii) Emergent ray will be parallel to the refracted ray. (iii) Speed of light will be more in glass slab as compared to medium A. (iv) Angle of refraction ...