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Q.

Ravi formed a bag containing the following materials

i) mirror 

ii) paper stained with oil 

iii) magnet 

iv) glass spectacles 

Help Ravi in finding out the material (s) which is / are opaque

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a

i only

b

iv only

c

i and  iii

d

i and iv

answer is C.

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Detailed Solution

Mirror and magnet are opaque materials.

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