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Subjects
Science CBSE
Class 8
Sound
Textbook questions
28.
NCERT Exemplar I
Exercise condition:
4
m.
1
.
A list of mediums is given below.
(i) wood
(ii) water
(iii) air
(iv) vacuum
In which of these mediums can sound travel?
i & ii only
i, ii & iii only
iii & iv only
ii, iii & iv only
2
.
The loudness of a sound depends on:
its speed
its time period
its amplitude
its frequency
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