Question

Which of the following is an opaque material ?
a) Butter Paper
b) Wood
c) Air
d) Water​

Answer 1

Answer:

a) Butter Paper .

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Answer 2

Answer:

b) Wood

Explanation:

1 not transmitting light; not transparent or translucent. 2 not reflecting light; lacking lustre or shine; dull. 3 not transmitting radiant energy, such as electromagnetic or corpuscular radiation, or sound.