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Relation between Displacement Wave and Pressure Wave Relation between Displacement Wave and Pressure Wave :- A sound wave can be expressed either by displacement of its particles from mean position or by excess pressure produced by compression and rarefaction. Consider a harmonic displacement wave moving through air contained in a long tube of cross…
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Speed of Longitudinal Waves Speed of Longitudinal Waves :- Consider a fluid (gas/liquid) element of thickness Δx confined in a tube of cross-sectional area S as shown in figure below : Let Po be the equilibrium pressure and ρ be the equilibrium density of the fluid. The mass of the element under consideration is…
Speed of Transverse Wave | Speed of Transverse Wave on a Straight Wire Speed of Transverse Wave | Speed of Transverse Wave on a Straight Wire :- In this article, we focus on determining the speed of a transverse pulse traveling on a taut string. Consider a pulse moving on a taut string…
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A wooden block with a coin placed on its top Question :- A wooden block with a coin placed on its top, floats in water as shown in the figure. The distance l and h are shown. After some time, the coin falls into the water. Then, (A) l decreases and h increases (B) l increases and h decreases (C) Both l and h increase…
In Bohr series of lines of hydrogen spectrum the third line Question :- In Bohr series of lines of hydrogen spectrum the third line from the red end corresponds to which one of the following inner orbit jumps of electron for Bohr’s orbit in atom of hydrogen (A) 3 → 2 (B) 5 →…
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If a spring of stiffness k is cut into two parts A and B of length lA : lB = 2 : 3, then the stiffness of spring A is given by Question :- If a spring of stiffness k is cut into two parts A and B of length lA : lB = 2 : 3,…
Poynting Vector | What is Poynting Vector | Poynting Vector Formula Poynting Vector | What is Poynting Vector | Poynting Vector Formula :- The Poynting vector is a physical quantity describing the magnitude and direction of energy flow in electromagnetic waves. The Poynting vector expresses the energy or energy flux passing through a unit…
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Transverse Nature of Electromagnetic Waves | Nature of Electromagnetic Waves Transverse Nature of Electromagnetic Waves | Nature of Electromagnetic Waves :- Electromagnetic waves are a type of energy that travels through space at the speed of light. They are generated by oscillating electric and magnetic fields and unlike mechanical waves like sound, they…
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Poynting वेक्टर क्या है? Poynting वेक्टर क्या है? पोयंटिंग वेक्टर (Poynting vector) :- पोयंटिंग वेक्टर, विद्युत चुम्बकीय तरंगों में ऊर्जा प्रवाह के परिमाण और दिशा का वर्णन करने वाली भौतिक राशी है। पोयंटिंग वेक्टर इकाई क्षेत्रफल से प्रति सेकंड पारित होने वाली ऊर्जा या ऊर्जा फ्लक्स को व्यक्त करता है। पॉयंटिंग वेक्टर को क्रॉस…
Maxwell’s Equations Integral Form | Maxwell’s Equations Class 12 Maxwell’s Equations Integral Form | Maxwell’s Equations Class 12 :- Maxwell gave 4 mathematical equations for electricity and magnetism which are called Maxwell’s equations. Electromagnetic phenomena can be explained on the basis of these equations. Maxwell’s equations are as follows :- Maxwell’s Equations Integral Form…
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