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CBSE - XII Science - Physics - Ray Optics and Optical Instruments
explain relative refractive index??
Asked by zahirqk
8th January 2023,
9:50 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is real depth and apparant depth and deravation
Asked by parjapati16062003
10th January 2022,
10:12 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
when snell's law is not valid? or for what angle of incidence snell's law is not valid?
Asked by satwarsuraj
10th May 2020,
6:33 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Sir/mam please answer the question in image posted
Asked by kpbhake
25th September 2017,
7:41 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
why do stars twinkle?
Asked by Pranav Shankhyan
8th February 2016,
1:14 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
total interna reflection by a plane surface possible????????
how??
Asked by harshwarrier
25th October 2015,
8:18 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
what is the difference between scattering and refraction of lighwaves
Asked by Mahesh Gwarrier
12th September 2015,
5:58 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is the Snell's Law of Refraction?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is the difference between reflection and refraction?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is the basic cause for refraction?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Does the variation in the actual sunrise and sunset affects the day duration?
Asked by Topperlearning User
21st May 2014,
6:52 AM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
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
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What happens to a ray of light when it travels through a glass slab?
Asked by Topperlearning User
20th May 2014,
3:38 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Prove that apparent depth is ¾ of real depth.
Asked by Topperlearning User
20th May 2014,
3:32 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
Why does a tank appear shallower than its actual depth?
Asked by Topperlearning User
20th May 2014,
3:25 PM
CBSE - XII Science - Physics - Ray Optics and Optical Instruments
What is refraction? State the three laws of refraction.
Asked by Topperlearning User
20th May 2014,
3:06 PM
