Light reflection and refraction click on Q.1 Which one of the following materials cannot be used to make a lens? (a) Water (b) Glass (c) Plastic (d) Clay Sol. (d) Clay. Q.2 The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object ? (a) Between the principal focus and the centre of curvature (b) At the centre of curvature (c) Beyond the centre of curvature ...
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