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प्रश्न
A ray of light travels from water to air as shown in the diagram given below :
1) Copy the diagram and complete the path of the way. Given the critical angle for water is 48°.
2) State the condition so that internal reflection occurs in the above diagram.
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उत्तर
1) The image formed by the lens is virtual and between the object and the lens. Hence, the lens used is a concave lens
2) The condition for the occurrence of internal reflection in the above diagram is that the angle of incidence should be greater than the given critical angle for water, i.e i > 48°
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संबंधित प्रश्न
State the relation between the critical angle and the absolute refractive index of a medium.
Total internal reflection occurs only when a ray of light passes from a ______ medium to a ______ medium.
i) Observe the given figure and answer the following questions.
a) Identify and write the natural process shown in the figure.
b) List the phenomena which are observe in this process.
c) Redraw the diagram and show above phenomena in it.
Define critical angle for a given medium.
Can light be ‘piped’ like sound in a doctor’s stethoscope?
How are critical angles related to the refractive index of the medium?
What is meant by the term ‘critical angle’?
What are the examples of total internal reflection in nature?
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the ______.
