United States
Sound (Part I)
| Author | : | TCY (Become fan) | |||
| Total Questions | : | 30 | |||
| Total Time | : | 30 mins | |||
| Rating | : |
 
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| Sound (Part I) | |||||
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Saumoneel Mandal asks :
Subject : light
why cannot light pass through an opaque body?
24/01/2012 22:15:51 | Reply
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