If refractive indices of water and alcohol are 1.33 and 1.36 respectively, which of the two is optically denser medium?
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Figure 10.1 shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is
(a) √3/√2 is the correct option
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What is meant by denatured alcohol? What is the need to denature alcohol?
Denatured alcohol is ethyl alcohol which has been made unfit for drinking purposes b,v adding poisonous substances like methanol, pyridine, copper sulphate, etc. Ethanol is an important chemical. It is supplied...
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What is an optically rarer medium?
A medium in which light travels comparatively faster than the other medium is called an optically rarer medium.
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What is an optically denser medium?
A medium in which light travels comparatively slower than the other medium is called an optically denser medium.
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Refractive index of two material mediums X and Y are 1.3 and 1.5 respectively. In which of the two, the light would travel faster?
In medium 'X' because of lower value of refractive index.
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Which one of the two-glass and water is optically denser and why?
Glass is denser than water because speed of light in glass is less than that of water.
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Vinegar is a solution of (A) 50% – 60% acetic acid in alcohol (B) 5% – 8% acetic acid in alcohol
(C) 5% – 8% acetic acid in water
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Total internal reflection can take place only if (a) light goes from optically rarer medium (smaller refractive index) to optically denser medium
(b) light goes from optically denser medium to rarer medium EXPLANATION: When the light goes from a denser medium to lighter medium, it goes away from the normal. When the angle of...
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Total internal reflection can take place only if (a) light goes from optically rarer medium
(b) According to Snell’s Law, sin i/ sin r =μ 2/μ 1 = where r = 90º for particular incidence angle called critical angle. When the incidence angle is equal to or greater than...
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When light travels from a rarer to a denser medium, the speed decreases.
No; when light travels from a rarer to denser medium, its frequency remains unchanged. According to quantities theory, the energy of a light beam depends on frequency and not on...
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