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Visible light consists of rays with wave...

Visible light consists of rays with wavelengths in the approximate range of:

A

4000 Ã… to 7500 Ã…

B

`4xx10^(-3)cm` to `7.5xx10^(-4)cm`

C

4000 nm to 7500 nm

D

`4xx10^(-5)m` to `7.5xx10^(-6)m`

Text Solution

Verified by Experts

The correct Answer is:
A
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A slit of width d is illuminated by white light (which consists of all the wavelengths in the visible range). (a) For what value of d will the first minimum for red light of wavelength lambda = 6500Å appear at theta = 15^(@) ? (b) What is the wavelength lambda of the light whose first side diffraction maximum is at 15^(@) , thus coinciding with the first minimum for the red light? [(a) 2.5 mu m, (b) 4300Å]

Visible Rays

Knowledge Check

  • Visible part of electromagnetic spectrun consists of radiations having a wavelength in the range of

    A
    400-800nm
    B
    300-2600nm
    C
    390-760 nm
    D
    650-760nm

  • The wavelength of X-rays is in the range

    A
    `0.01 Å` to `1 Å`
    B
    `0.001 nm` to `1 nm`
    C
    `0.001 mum` to `1 mum`
    D
    `0.001 cm` to `1 cm`

  • The energy of a photon corresponding to the visible light of maximum wavelenth is approximately

    A
    1 eV
    B
    1.6 eV
    C
    3.2 eV
    D
    7 eV

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    Consider the following statement about visible light, UV light and X-rays: The wavelength of visible light is more than that of X-rays. 2. The energy of X-rays photons is higher than that of UV light photons. 3. The energy of UV light photons is less than that of visible light photons. Which of the statements given above is/are correct?

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