Physics

Previous year questions, Ray Optics, Class 12, CBSE, Physics, Chapter 9

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Previous year questions, Ray Optics, Class 12, CBSE, Physics, Chapter 9 Ray Optics and Optical Instruments Class 12 Important Questions Very Short Answer Type Question 1.Aglasslensof refractive index 1.5 is placed in a trough of liquid. What must be the refractive index of the liquid in order to mark the lens disappear? (Delhi 2008)Answer:In order …

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NCERT Solution Chapter-1, Physical World, Class-11, Physics, CBSE

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NCERT Solution Chapter-1, Physical World, Class-11, Physics, CBSE Q. 1. Some of the most profound statements on the nature of science have come from Albert Einstein, one of the greatest scientist of all time. What do you think did Einstein mean when he said “The most incomprehensible thing about the world is that it is …

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Important Questions for Class 12 Physics Chapter 15 Communication Systems

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Important Questions for Class 12 Physics Chapter 15 Communication Systems Class 12 Important Questions Communication Systems Class 12 Important Questions Very Short Answer Type Question 1.What is sky wave propagation? (Delhi 2009)Answer:Propagation of frequencies less than 40 MHz using the reflecting property of ionosphere is called Sky wave propagation. Question 2.What is ground wave propagation? …

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