41 42 43 A 43 B 44 45 46 47 48 A 48 B 49 50 51 52 53 54 55 56 57 58 59 60 A 60 B 61 A 61 B 62 A 62 B 67 A 67 B

Lakhmir Singh & Manjit Kaur - Physics

Very Short Answer Type Questions-Pg-185

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Short Answer Type Questions-Pg-186

41 42 43 A 43 B 44 45 46 47 48 A 48 B 49 50 51 52 53 54 55 56 57 58 59 60 A 60 B 61 A 61 B 62 A 62 B 67 A 67 B

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Questions Based on High Order Thinking Skills (HOTS)-Pg-188

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Q. 543.9( 15 Votes )

A sound signal of

Class 9th Lakhmir Singh & Manjit Kaur - Physics 5. Sound

Answer :

A sound signal of 128 vibrations per second has a wavelength of 2.7 m. The speed with which the wave travels is 345.6 m/s.

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