MPSC Rajyaseva 2014 GS Paper 1 — Question 56
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खालीलपैकी योग्य वाक्यांची निवड करा. / Choose correct statements from the following :
(a)ध्वनिहरी वायू पदार्थापेक्षा स्थायू पदार्थातून वेगाने जातात. / Sound waves travel faster in solids than in gases.
(b)ध्वनिहरी निर्वात पोकळीतून सर्वात जलद गतीने जातात. / Sound waves travel fastest through vacuum
(c)ध्वनिहरी अनुलंभ लहरी आहेत. / Sound waves are longitudinal waves
(d)ध्वनिहरी द्रव पदार्थापेक्षा वायू पदार्थातून कमी वेगाने जातात. / Sound waves travel slower in gases than in liquids.
Sound waves travel fastest in solids (a), are longitudinal waves (c), and travel slower in gases than in liquids (d). Statement (b) is false because sound cannot travel through a vacuum at all.
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