A light of wavelength 5000 angstrom

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A light of wavelength 5000 angstrom

What are the wavelength and frequency of the reflected light? For what angle of incidence is the reflected ray normal to the incident ray? The wavelength and frequency of incident light is the same as that of reflected ray. When reflected ray is normal to incident ray, the sum of the angle of incidence, ang. What is the force between two small charged spheres having charges of 2 x 10 -7 C and 3 x 10 -7 C placed 30 cm apart in air? Calculate the linear charge density. A pF capacitor is charged by a V supply. It is then disconnected from the supply and is connected to another uncharged pF capacitor. How much electrostatic energy is lost in the process? What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6? Calculate the potential at the centre of the hexagon. What is the magnitude of the electric flux through the square? Hint: Think of the square as one face of a cube with edge 10 cm. A conducting sphere of radius 10 cm has an unknown charge.

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The energy of photon b. The kinetic energy of photoelectrons. The kinetic energy of the photoelectron emitted will be. A radiation of wave length A 0 is incident on a metal plate whose work function is 3. A metal has a work function of 2. Calculate a the threshold wavelength b the maximum energy of photoelectrons c the stopping potential. The work function of a metal is 2.

The number of incident photons N per second per square metre is therefore:. Here is an alternate approach. Here we assume that the work function is overcome by the incoming light energy Note that the work function was not stated, so we must assume that it is overcome by the incoming light energy The light wavelength angstroms should be represented in "m" , as Planck's constant has "m". Therefore, the energy contained in one photon of that wavelength is:. Now, the intensity of light can be treated as if it were an energy value for all the photons involved, since we retain all the units beyond "J". Jun 18, Truong-Son N. Related questions How do I determine the molecular shape of a molecule?

A light of wavelength 5000 angstrom

The term "infrared" refers to a broad range of frequencies, beginning at the top end of those frequencies used for communication and extending up the the low frequency red end of the visible spectrum. The wavelength range is from about 1 millimeter down to nm. The range adjacent to the visible spectrum is called the "near infrared" and the longer wavelength part is called "far infrared".

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Treat the speed of light as , miles per second. The first step is always to write out the data.

In the dispersion of white light by a common glass prism, which one among the following is correct? UIIC Assistant. What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6? Canara Bank PO. Telangana High Court Copyist. Maharashtra Prison Department. Railway TTE. Punjab Police Jail Warder. Odisha Assistant Agriculture Officer. EMRS Driver. NFL MT. SSC Stenographer. Trusted by 5. CG Forest Guard. Delhi Home Guard.