communication.pptx

2016

University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 1 covers mechanics, sound, oscillations, and waves. Volume 2 covers thermodynamics, electricity and magnetism, and Volume 3 covers optics and modern physics. This textbook emphasizes connections between theory and application, making physics concepts interesting and accessible to students while maintaining the mathematical rigor inherent in the subject. Frequent, strong examples focus on how to approach a problem, how to work with the equations, and how to check and generalize the result.https://commons.erau.edu/oer-textbook/1002/thumbnail.jp

1. N molecules each of mass m and v velocity collides with a wall of a container and then absorbed, the pressure applied on the wall is : (1) mNV 2 (2) mNV 2 (3) 2 mNV 2 (4) mNV 2 3 2 2. The law of far a day is obtained by conservation of : (1) Charge (2) Energy (3) Energy and magnetic field (4) Magnetic field 3. There is a q charge placed in the centre of a cube, then the emergent flux is : (1) q (2) q (3) q (4) q_ 6∈ 0 8 ∈ 0 2 ∈ 0 ∈ 0 4. Two thin lenses are put close to each other, focal length of the combination is : (1) less than the small focal length (2) more than the bigger focal length (3) equal to the arithmetical average of the focal length (4) equal to the geometrical average of the focal length 5. A car is moving on a horizontal circular path with 10 m/s constant speed. A rigid body is suspended from ceiling of car with a 1 m. long light rod, the angle between rod and path is : (1) 60 0 (2) 45 0 (3) 30 0 (4) zero 6. Two sources of E 1 and E 2 emf r 1 and r 2 internal, resistances, are connected in the parallel combination, the emf of the combination is : (1) E 1 E 2 (2) E 2 r 1 + E 1 r 2 (3) E 1 r 1 + E 2 r 2 (4) E 1 + E 2 E 1 +E 2 r 1 + r 2 r 1 + r 2 2 7. In a AC circuit R = 0 Ω ΩΩ Ω, X L = 8Ω ΩΩ Ω and X C = 6Ω ΩΩ Ω phase difference between voltage and current is : (1) 11 0 (2) 45 0 (3) 37 0 (4) 12 0 8. Relative permeability of a medium is µ µµ µ r and relative permittivity is ∈ ∈∈ ∈ r then the velocity of an electro magnetic wave is : (1) c (2) √∈ r µ r (3) √µ 0 t 0 (4) 1 ∈ 0 µ 0 µ r ∈ r µ r ∈ r

2016

University Physics is designed for the two- or three-semester calculus-based physics course. The text has been developed to meet the scope and sequence of most university physics courses and provides a foundation for a career in mathematics, science, or engineering. The book provides an important opportunity for students to learn the core concepts of physics and understand how those concepts apply to their lives and to the world around them. Due to the comprehensive nature of the material, we are offering the book in three volumes for flexibility and efficiency.

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