Question 4
Boojho found a bag containing the following materials:
(i) Mirror
(ii) Paper stained with oil
(iii) Magnet
(iv) Glass spectacles
Help Boojho in finding out the material(s) which is/are opaque.
(a) Only (i) (b) Only (iv) (c) (i) and (iii) (d) (i) and (iv)