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प्रश्न
Write the approximate wavelengths for blue.
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उत्तर
For blue light, approximate wavelength = 4800 Å.
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संबंधित प्रश्न
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In following figure shows a thin beam of white light from a source S striking on one face of a prism.
Complete the diagram to show effect of prism on the beam and to show what is seen on the screen.
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