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प्रश्न
Match the statements in Column A with those in Column B.
| Column A | Column B |
|---|---|
| (a) Echo | (i) Mechanical waves which do not get scattered in water easily. |
| (b) Sonar | (ii) A branch of medical science which uses ultrasonic waves to find any damage in internal organs. |
| (c) Radar | (iii) A device based on echoes and used for finding depth of sea or lakes. |
| (d) Ultrasonic waves | (iv) A phenomenon based on the reflection of sound. |
| (e) Ultrasonography | (v) A device based on reflection of sound and used for locating enemy aircraft. |
जोड्या लावा/जोड्या जुळवा
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उत्तर
| Column A | Column B |
|---|---|
| (a) Echo | (iv) A phenomenon based on the reflection of sound. |
| (b) Sonar | (iii) A device based on echoes and used for finding depth of sea or lakes. |
| (c) Radar | (v) A device based on reflection of sound and used for locating enemy aircraft. |
| (d) Ultrasonic waves | (i) Mechanical waves which do not get scattered in water easily. |
| (e) Ultrasonography | (ii) A branch of medical science which uses ultrasonic waves to find any damage in internal organs. |
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