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Nuclear Energy and Chemical Energy
>A certain nucleus X has a mass number of 15 atomic number 7. Find the no. of neutrons. The nucleus X loses (i) one proton, (ii) one b - particle, (iii) one a - particle. Express each change and write a symbol of the new nucleus in each case. Suggested Answer:- No. of protons = mass no. - atomic no..
>A certain nucleus X has a mass number of 15 atomic number 7. Find the no. of neutrons. The nucleus X loses (i) one proton, (ii) one b - particle, (iii) one a - particle. Express each change and write a symbol of the new nucleus in each case. Suggested Answer:- No. of protons = mass no. - atomic no..Case (i) Reflection occurring at a free end
In this case, there will be no reversal of phase due to reflection. Let the incident wave be represented by the equation The reflected wave will have the same amplitude, velocity and wavelength. It can be represented by The resultant displacement of the particle subjected to these two disturbances ..
In this case, there will be no reversal of phase due to reflection. Let the incident wave be represented by the equation The reflected wave will have the same amplitude, velocity and wavelength. It can be represented by The resultant displacement of the particle subjected to these two disturbances ..Activity
Take a nichrome wire of about 50 cm length and apply a potential difference of 1.5 V from a battery. Measure the current flowing through the wire using an ammeter connected to it in series, and note the potential difference across the resistance using a voltmeter connected across it. Note down and ..
Take a nichrome wire of about 50 cm length and apply a potential difference of 1.5 V from a battery. Measure the current flowing through the wire using an ammeter connected to it in series, and note the potential difference across the resistance using a voltmeter connected across it. Note down and ..Power of a Lens
Power of a Lens - Whenever a ray of light passes through a lens (except when it passes through the optical center) it bends. The bending of light rays towards the principal axis is called convergence and bending of light rays away from the principal axis is called divergence. The degree of converge..
Power of a Lens - Whenever a ray of light passes through a lens (except when it passes through the optical center) it bends. The bending of light rays towards the principal axis is called convergence and bending of light rays away from the principal axis is called divergence. The degree of converge..Refraction of Light through a Glass Slab
Refraction of Light through a Glass Slab - Let us now perform an experiment and find out how light gets refracted when it is incident on a rectangular glass slab. Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the..
b) Positions of the nodes
Consider the positions, where Then y = 0 R = 0 Since y = 0, these positions correspond to nodes. The strain represented by will be maximum at these points. ..
Consider the positions, where Then y = 0 R = 0 Since y = 0, these positions correspond to nodes. The strain represented by will be maximum at these points. ..Constructive interference
Two waves are said to interfere constructively or reinforce each other, if the resultant amplitude is maximum. The condition for constructive interference is that the phase difference A phase difference of 2 p corresponds to a path difference l . Let the phase difference f correspond to a path diff..
Two waves are said to interfere constructively or reinforce each other, if the resultant amplitude is maximum. The condition for constructive interference is that the phase difference A phase difference of 2 p corresponds to a path difference l . Let the phase difference f correspond to a path diff..Effect of temperature
Therefore, the velocity is inversely proportional to the square root of the density But density and volume are inversely proportional. According to Charles' law of volume, ..
Therefore, the velocity is inversely proportional to the square root of the density But density and volume are inversely proportional. According to Charles' law of volume, ..Frequency (f)
It is the number of waves produced per second or the number of oscillations made by a particle of the medium per second. In T seconds one oscillation is completed. Therefore in 1 second the number of oscillations made will be This is the definition of frequency..
It is the number of waves produced per second or the number of oscillations made by a particle of the medium per second. In T seconds one oscillation is completed. Therefore in 1 second the number of oscillations made will be This is the definition of frequency..Comets
Comets are like dirty snowballs from space. They are made up of rocks, ice and dust. They are basically aggregates of dust and frozen gases. The head of a comet is only a few kilometers wide, but its tail can be millions of kilometers long. Comet Comets orbit the sun in long, looping orbits. Most o..
Comets are like dirty snowballs from space. They are made up of rocks, ice and dust. They are basically aggregates of dust and frozen gases. The head of a comet is only a few kilometers wide, but its tail can be millions of kilometers long. Comet Comets orbit the sun in long, looping orbits. Most o..See what our Users say :
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