An art infused learning platform
Speed of Sound in Air Speed of Sound in Air :- The formula for velocity of sound in air was first obtained by Newton. He assumed that when sound propagates through a gas the temperature remains constant (i.e. the process is isothermal). So a compressed layer of air gradually loses heat to the surroundings…
Sound Intensity In Decibels | Sound Level In Decibels Sound Intensity In Decibels | Sound Level In Decibels :- Human ear respond to sound intensities from 10-12 Wm-2 to 1 Wm-2. Here the minimum frequency 10-12 Wm-2 is called threshold of hearing (I0) or reference intensity of human ear and upper range 1…
Read More “Sound Intensity In Decibels | Sound Level In Decibels” »
Intensity of a wave | Power of a Wave Intensity of a wave | Power of a Wave :- The power of a wave refers to the rate at which energy is transferred by the wave per unit of time. In other words, it is the amount of energy carried by the wave over…
Energy of a Wave Energy of a Wave :- All waves carry energy. The energy of a wave refers to the amount of energy carried by the oscillations or disturbances propagating through a medium or space. It is the measure of the ability of the wave to do work or cause a change in…
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…
Read More “Relation between Displacement Wave and Pressure Wave” »
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…
Read More “Speed of Transverse Wave | Speed of Transverse Wave on a Straight Wire” »
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 →…
Read More “In Bohr series of lines of hydrogen spectrum the third line” »
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,…