Subject :NSO Class : Class 8
Subject :NSO Class : Class 4
Ans 3:
Class : Class 8
please mention the phrase for piercing teeth with the detail solutions not just the answers please make these changes
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
When sound wave travels from air into water, how do the frequency, wavelength and speed changes?
Frequency | Wavelength | Speed | |
A | No change | Decreases | Decreases |
B | Increases | No change | Decreases |
C | No change | Increases | Increases |
D | Increase | No change | Increase |
Ans 2:
Class : Class 9
Speed of light in water is less as compared to that of air as water is optically denser than air.
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 6