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Physics - Questions and Answers Objective Questions
Physics - Questions and AnswersPage 58
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Answer is: DWhen sunlight falls on drop of rain, it undergoes refraction and internal reflection and splits into different colours (dispersion).
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Answer is: BOne should not connect a number of electrical appliances to same power socket because it may cause short circuit and damage the electrical appliances connected to it and it may also catch fire
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Answer is: CLarge astronomical telescopes always use as objective combination of lenses.
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Answer is: A
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Answer is: AResult for Sound of frequency below 20 Hz is called Infrasound, sometimes referred to as low-frequency sound, describes sound waves with a frequency below the lower limit of audibility (generally 20 Hz). ... The study of such sound waves is sometimes referred to as infrasonics, covering sounds beneath 20 Hz down to 0.1 Hz.
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Answer is: DRadar, electromagnetic sensor used for detecting, locating, tracking, and recognizing objects of various kinds at considerable distances.
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Answer is: B
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Answer is: CInterference is a phenomenon in which two waves superimpose to form a resultant wave of greater, lower or same amplitude.
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Answer is: DOne lux (Latin for ?light?) is the amount of illumination provided when one lumen is evenly distributed over an area of one square metre.
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Answer is: AA rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification.
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