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Sound diffraction and angle of incidence3/31/2024 The MCQs in UPSC Prelims are generally of the following types: So, MCQs on this website are prepared in that direction to make you conceptually strong. The questions are designed to test the candidate's understanding of the subject matter and their ability to apply that knowledge in a practical context. So practice time management techniques and use a timer while solving mock tests. You will have to answer all the questions within a limited time frame. The UPSC Prelims exam is a highly competitive exam and it is important for candidates to have a thorough understanding of the syllabus and to practice as many MCQs as possible to increase their chances of success. The exam tests the candidate's knowledge of current events, Indian and World history, Indian and World geography, Indian polity and governance, economic and social development, general science and environmental ecology and biodiversity. The General Studies Paper 1 is worth 200 marks and is comprised of multiple choice questions (MCQs). The exam consists of two papers: General Studies Paper 1 and General Studies Paper 2 (also known as the Civil Services Aptitude Test or CSAT). The UPSC (Union Public Service Commission) Prelims exam is the first step in the selection process for the Indian Administrative Service (IAS), Indian Foreign Service (IFS), and Indian Police Service (IPS) among other civil services in India. What is the term used to describe the reflection of sound waves off a surface that is not parallel to the incident wave? How does the frequency of the sound wave affect its ability to be reflected?Ī) The frequency has no effect on the ability to be reflectedī) High frequency waves are more easily reflectedĬ) Low frequency waves are more easily reflectedġ0. What is the term used to describe the reflection of sound waves off a curved surface?ĩ. How does the distance between the source of sound and the reflecting surface affect the intensity of the reflected sound wave?Ī) The distance has no effect on the intensityĨ. What is the term used to describe the reflection of sound waves off multiple surfaces?ħ. Which of the following surfaces is most likely to cause an echo?Ħ. What is the term used to describe the change in direction of a sound wave when it reflects off a surface?ĥ. How does the angle of incidence affect the intensity of the reflected sound wave?Ī) The angle of incidence has no effect on the intensityī) The angle of incidence increases the intensityĬ) The angle of incidence decreases the intensityĤ. What is the relationship between the angle of incidence and the angle of reflection for sound waves?ī) The angle of incidence is greater than the angle of reflectionĬ) The angle of incidence is less than the angle of reflectionĭ) The relationship varies depending on the mediumģ. Which of the following is NOT a requirement for sound waves to be reflected?Ģ.
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