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Which of the following statements about waves is/are correct? 1. Within air, waves propagate as longitudinal waves. 2. In liquids, the particles do not execute transverse oscillatory motion during wave movement. 3. Waves are never reflected when they strike an obstacle because of the dynamic nature of air. 4. On the upper surface of water, the alternate rises and falls produced by waves are called crests and troughs respectively. Select the correct answer using the code given below:
This question appeared in the HPSC Prelims 2021 examination (GS-II). It is Question 5 out of 198 questions in this paper.
This question was part of the HPSC Prelims 2021 (GS-II). The HPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all HPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.