Subject :NSO Class : Class 4
Class : Class 10
please mention the phrase for piercing teeth with the detail solutions not just the answers please make these changes
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
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Subject :NSO Class : Class 4
Ans 2:
Class : Class 4
Let’s check the given statements and find if they are correct:Statement 1: Snake and crocodile are cold blooded animals. ----- Correct. Snakes and crocodiles are reptiles. Reptiles are cold-blooded animals, and cannot control their body temperature. They regulate their body temperature by lying in the sun to warm up, or moving into the shade to cool down.Statement 2: Snake and crocodile breathe through moist skin mostly. ----- Incorrect. Snakes and crocodiles breathe through lungs. That is where the exchange of gases takes place.That means Statement 1 is correct but Statement 2 is incorrect.Hence, the right answer of Option C.The correct answer is C.