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प्रश्न
State the conditions required for total internal reflection of light to take place
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उत्तर
Conditions necessary for total internal reflection to take place are
1) Light must travel from a denser medium to a rarer medium.
2) The angle of incidence must be greater than the critical angle for the pair of media.
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संबंधित प्रश्न
Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.
State two conditions necessary for total internal reflection to occur.
One day Chetan’s mother developed a severe stomach ache all of a sudden. She was rushed to the doctor who suggested for an immediate endoscopy test and gave an estimate of expenditure for the same. Chetan immediately contacted his class teacher and shared the information with her. The class teacher arranged for the money and rushed to the hospital. On realizing that Chetan belonged to a below average income group family, even the doctor offered concession for the test fee. The test was conducted successfully.
Answer the following questions based on the above information:
(a) Which principle in optics is made use of in endoscopy?
(b) Briefly explain the values reflected in the action taken by the teacher.
(c) In what way do you appreciate the response of the doctor on the given situation?
How does a ray of light bend when it travels from denser to rarer medium.
What is meant by the term ‘critical angle’?
A ray of light is incident on a glass surface at an angle of 50° with the corresponding angle of refraction 30°. Find the value of the R.I. of glass.
A spherical marble, of refractive index 1.5 and curvature 1.5 cm, contains a tiny air bubble at its centre. Where will it appear when seen from outside?
Choose the correct option.
Angles of deviation for extreme colours are given for different prisms. Select the one having maximum dispersive power of its material.
A green light is incident from the water to the air-water interface at the critical angle (C). Select the correct statement.
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the ______.
