The spectrum is the color band that appears on a screen when white light is sent through a prism. What do you understand by the term spectrum? As a result, upon refraction at the second surface, the colors become even further divided (violet being deviated the most and red the least) Only refraction occurs on the second surface, where various colors are bent at various angles. Thus, the first surface of the prism is where white light is divided into its component colors. When white light strikes the initial surface of a prism and enters the glass, light of various colors is refracted or diverted through various angles as a result of the varying speeds at which the glass moves. Explain briefly, with the help of a neat labeled diagram, how white light gets dispersed by a prism. Therefore, the alteration in light speed with wavelength or frequency is the root cause of dispersion. When white light strikes the initial surface of a prism and enters the glass, light of various hues is refracted or diverted through various angles as a result of the varying speeds at which the glass moves. Explain the cause of dispersion of white light through a prism. Define the term dispersion of light.ĭispersion of light is the process by which a prism divides white light into its individual color. (b) Red light travels more quickly through a glass. (a) Red and Blue both color move at the same speed in a vacuum. (b) Which color has the greater speed in glass? (a) Which color has the greater speed in vacuum? The wavelengths for the light of red and blue colors are roughly 7.8×10 7 m and 4.8× 10 7 m respectively. The violet light is most and the red light is least distorted by a glass prism. Which color of white light is deviated by a glass prism the most and which the least? The spectrum of white light which have wavelength longer than blue light are Red, orange and yellow. Name four colors of the spectrum of white light which have wavelength longer than blue light. The seven colors are red, orange, yellow, green, blue, indigo, and violet, in descending order of increasing frequency. Name the seven prominent colors of the white light spectrum in order of their increasing frequencies. In order of increasing frequency, these are the seven most noticeable hues of the white light spectrum: red, orange, yellow, green, blue, indigo, and violet. Write the seven prominent colors present in white light spectrum in order of their increasing wavelength. (b) Violet light has a wavelength of 4000. (ii) The approximate wavelength of red light is around 8000. (a) (i) The approximate wavelength of blue light is around 4800. Which of the two has the higher frequency? (b) The wavelengths of violet and red light are 4000 Å respectively. (a) Write the approximate wavelengths for (i) blue and (ii) red light. What is the range of wavelength of the spectrum of white light in (i) Å, (ii) nm? (ii) The wavelength for red light approximate is 8000 Å (i) The wavelength for blue light approximate is 4800 Å Subjective property of light related to its wavelength: ![]() Name the subjective property of light related to its wavelength. Which color of white light travels (a) fastest (b) slowest, in glass?| With an increase in wavelength, light moves quickly. How does the speed of light in glass change on increasing the wavelength of light? ![]() How does the deviation produced by a triangular prism depend on the colors (or wavelengths) of light incident on it?Īs the wavelength of light incoming on a prism decreases, so does the deviation it produces. As the wavelength of light incoming on a prism decreases, so does the deviation it produces. The light’s hue or wavelength Angle of deviation rises as light’s wavelength decreases. As the wavelength of light decreases, the angle of departure increases. ![]() (d) The color or wavelength of the light employed. (c) Prism angle: As the prism angle grows, so does the angle of deviation. (b) The prism’s composition, or refractive index: For a given angle of incidence, a prism with a higher refractive index will deviate more than a prism with a lower refractive index. The angle of deviation is seen to grow as the angle of incidence is increased further. (a) The angle of incidence – As the angle of incidence rises, the angle of deviation initially falls and, for a certain angle of incidence, achieves a minimal value. The deviation produced by the prism depends on the following four factors: Name three factors on which the deviation produces by a prism depends and state how does it depend on the factors stated by you.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |