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प्रश्न
In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen.
State the colour seen (i) at X, and (ii) at Y.
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उत्तर
(i)The colour seen at X is violet (as it is the maximum deviated).
(ii) The colour seen at Y is red (as it is the least deviated).
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संबंधित प्रश्न
Study the following ray diagram:
In this diagram, the angle of incidence, the angle of emergence and the angle of deviation respectively have been represented by
(A) y, p, z
(B) x, q, z
(C) p, y, z
(D) p, z, y
State the cause of dispersion of white light
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
What will happen if another similar glass prism is placed upside down behind the first prism?
The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
The colour of white light which is deviated the maximum on passing through the glass prism is:
(a) blue
(b) indigo
(c) red
(d) orange
The seven colours in the spectrum of sunlight in order, are represented as :
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white light.
In which of the following four diagrams is the correct path of a ray of light passing through a glass prism shown ?
In an experiment to trace the path of a ray of light through a glass prism for different values of angle of incidence a student would find that the emergent ray:
(A) is parallel to the incident ray
(B) perpendicular to the incident ray
(C) is parallel to the refracted ray
(D) bends at an angle to the direction of incident ray
Complete the ray diagram given below to show the nature of light produced on the screen.
The completed ray diagram is as shown below:
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
State two properties of ultra-violet radiations which differ from visible light.
Write the range of wavelength of the infrared spectrum.
Sunlight entering through a narrow aperture falls on a prism. Draw a neat labelled ray diagram to show the formation of the spectrum on a screen. Name the colour obtained nearer the base of the prism.
The phenomena of light involved in the formation of rainbow are ______.
Which one of the following is involved for the formation of rainbow in the sky?
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
State the colour which bends:
- The most.
- The least while passing through a glass prism.
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Which colour will show the maximum angle of deviation and which colour will show the minimum angle of deviation?
