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प्रश्न
Fig shows a thin beam of white light from a source S striking on one face of a prism.
- Complete the diagram to show the effect of the prism on the beam and to show what is seen on the screen.
- If a slit is placed in between the prism and the screen to pass only the light of green colour, what will you then observe on the screen?
- What conclusion do you draw from the observation in part (b) above?
उत्तर
- On the screen are seven colors arranged in the sequence of "VIBGYOR." The other colors are arranged as in VIBGYOR, with Red at the top and Violet at the bottom.
We will observe the light of only green colour on the screen.- We draw the conclusion that a prism by itself produces no colours.
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संबंधित प्रश्न
Name the subjective property of light related to its wavelength.
The smoke from a fire looks white. Which of the following statements is true?
1) Molecules of the smoke are bigger than the wavelength of light
2) Molecules of the smoke are smaller than the wavelength of light.
Which colour of white light is deviated by a glass prism
- the most and
- the least?
What is the range of wavelength of the spectrum of white light in Å?
Calculate the frequency of yellow light of wavelength 550 nm. The speed of light is 3 × 108 m/s-1.
Name four colours of the spectrum of white light which have wavelength longer than blue light.
Which colour of white light is deviated most.
Which colour of white light is deviated at least?
An imaginary material reflects red light, scatters green light, transmits blue light, and absorbs yellow, orange, and violet light. A cube of this material is shown in the given diagram.
The surface is illuminated with a beam of white light. What colour will this cube appear?
(i) from above,
(ii) from below and
(iii) from the sides?
What is the range of wavelength of the spectrum of white light nm?
