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Refraction By Plane Surfaces Free Doubts and Solutions

In an aquarium a fish 6 cm long is swimming directly towards the plane glass front . If at a certain moment head of the fish is 18 cm behind the glass front,find the apparent length of the fish as seen by a person looking through the glass.  Given R.I. of water = 4/3

Asked by mridulabarua05 2nd February 2019, 11:28 AM

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When a white ray of light passes through a prism , it is dispersed. Why? Why does violet colour deviates most, but red colour deviates least while dispersed by a prism?

Asked by pradeepjsme 1st February 2019, 2:13 PM

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draw the path of a ray passing through a glass slab. state the factors on which lateral displacement depend. what is the angle of deviation of emergent ray

Asked by kalyani 19th September 2018, 4:28 PM

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Sir/mam please answer the question in image posted

Asked by kpbhake 25th September 2017, 7:41 PM

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If two mirrors are inclined at some angle A. An object is placed between the mirrors and there are 5 images formed for an object, then A is may be 1. 45 degree 2. 53 degree 3. 63 degree 4. 75 degree

Asked by rajeshtitu 14th July 2016, 9:16 PM

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why do stars twinkle?

Asked by Pranav Shankhyan 8th February 2016, 1:14 PM

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total interna reflection by a plane surface possible???????? how??

Asked by harshwarrier 25th October 2015, 8:18 PM

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what is the difference between scattering and refraction of lighwaves

Asked by Mahesh Gwarrier 12th September 2015, 5:58 PM

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Height of water that would be filled in a container of height 21 cm so that it appears half filled to the observer when veiwed from the top of container is [refractive index of water = 4/3] 1.)8 cm 2.) 10.5 cm 3.)12 cm 4.)14 cm please explain! Respected sir/ madam Is mu (sign of refractive index)=Real depth/Apparent depth and mu (sign of refractive index)=Apparent height/ Real height, sir,are these two equations correct? which one will be used for solving the above question? please tell me when to use which equation? I am in great confusion .Please help!

Asked by Kb Aulakh 25th April 2015, 5:39 PM

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a small object is placed  10cm  in front  of aplane mirror if you stand behind the object 30cm from the object and look at its image the distance focoused for your eye will be

Asked by Mendy 17th April 2015, 4:23 PM

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A glass lens of refractive index 1.5 is placed in a trough of liquid. What must be the refractive index of the liquid in order to make the lens disappear?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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A glass lens of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the liquid?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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Suppose a ray of light travels from air to glass() at an angle of . Calculate angle of refraction.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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What is the Snell's Law of Refraction?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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What is the difference between reflection and refraction?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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What is the basic cause for refraction?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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When monochromatic light travels from one medium to another its wavelength changes but frequency remains the same. Explain.

Asked by Topperlearning User 21st May 2014, 7:08 AM

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Does the variation in the actual sunrise and sunset affects the day duration?

Asked by Topperlearning User 21st May 2014, 6:52 AM

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The rising sun is visible to us before actual sun rise and after actual sunset. Why?

Asked by Topperlearning User 21st May 2014, 6:51 AM

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What happens to a ray of light when it travels through a glass slab?

Asked by Topperlearning User 20th May 2014, 3:38 PM

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Prove that apparent depth is ¾ of real depth.

Asked by Topperlearning User 20th May 2014, 3:32 PM

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Why does a tank appear shallower than its actual depth?

Asked by Topperlearning User 20th May 2014, 3:25 PM

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What is refraction? State the three laws of refraction.

Asked by Topperlearning User 20th May 2014, 3:06 PM