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प्रश्न
A total reflecting equilateral prism can be used to deviate a ray of light through:
विकल्प
30°
60°
75°
90°
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उत्तर
60°
Hint:
संबंधित प्रश्न
What is a spectrum?
Define refraction and state the laws of refraction.
The following diagram shows a 60°, 30°, 90° glass prism of critical angle 42°, Copy the diagram and complete the path of incident ray AB emerging out of the prism marking the angle of incidence on each surface.
Draw diagrams to show the refraction of light from
- air to glass, and
- glass to air. In each diagram, label the incident ray, refracted ray, the angle of incidence
- and the angle of refraction (r).
For which colour of white light, is the refractive index of a transparent medium the most?
Fig shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) What is the line XX' called?
(iii) Complete the path of the incident ray PQ after passing through the lens.
(iv) The final emergent ray either meets XX' at a point or appears to come from a point on XX'. Label it as F, What is this point called?
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is
Comment on the statement ‘The refractive index of glass is 3/2.’
Complete the ray diagram showing its emergence into the air after passing through the prism.
Trace a ray of light incident at 30° on a surface if travelling from air to glass. What is the angle of refraction in this case? (R.I. for glass = 3/2).
