Question

Anita Keshar –a counsellor at Woodstock school Mussoorie is concerned about irresponsible TV viewing because of which the manners and morals of students are getting impacted. Write a letter to the editor of a national daily on her behalf .State the problem, its impact and offer suggestions.
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Answer 1

Explanation:

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Answer 2

Answer:

Bouncing off a wave off the surface of a substance - Reflection

Bending of a wave as it passes from one medium into another - Refraction

Part of the sound wave where the molecules are pressed closely together - Compressions

Part of the sound wave where the molecules are far apart - Rarefactions

Force that resists moving one object against another - Friction