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Draw a ray diagram to show the rays of light move from object to imagine in photocopier
Is it object at 2F1 plz confirm |
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| asked by Ayush Agarwal (qwertyuiop12345678901234567890) 5 years ago |
4 |
Selina :
"Infrared radiations are used as signals during war as they are not visible.."
Someone kill me already!!! |
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| asked by Prateek Pradhan (prateek235) 5 years ago |
3 |
+ 2 more questions by prateek235
A small suggestion here(You may be doing it already)
While drawing ray diagrams, try drawing the lens using protractor, and you'll get perfectly equi-convex/concave lenses. I used to draw them using compass and it was a mess.
P.S. Don't forget those tiny little arrow-heads! |
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| asked by Prateek Pradhan (prateek235) 5 years ago |
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A few doubts here:
1. Which definition of "Refractive Index" are we supposed to write?
2. What's the principle of a machine?
3. Energy conversion in Bulb - Is it Electrical to Light OR Light & Heat? I mean, do we need to mention the degraded form of energy too? |
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| asked by Prateek Pradhan (prateek235) 5 years ago |
2 |
https://www.respaper.com/piyush7/9108-zip.html Q 6) 1) a) and b)
will the answers be: a) lowers frequency(reduce thickness or radius)
b) increases frequency (more tension by pulling) |
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| asked by Aditi RK (sciencegeek) 5 years ago |
2 | + 1 more questions by sciencegeek
Ok so if anyone is so kind enough to tell me when to convert kgf to N or even when g= 10m/s^2 is given, when should we convert. and is it necessary to convert to g from kg when solving for the Work done (Kinetic or potential energy.) I know its a silly doubt, but please help me. |
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| asked by Aditi RK (sciencegeek) 5 years ago |
5 |
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TEST MM - 10 TIME - 4 minute (just asking my doubts)
1) What is Eddy current ? [2 marks]
2) Current carring wire placed between the poles pieces experiences _________ force. [2 marks]
3) 9 units of electricity = ? [2 marks]
4) Energy conversion in thermocouple (i know heheheh) 2 marks]
5) Proper defination of rayleigh scattering [2 marks] |
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| asked by Ansh Anand (teleansh) 5 years ago |
3 | + 2 more questions by teleansh
TEST MM - 10 TIME - 1 minute (just asking my doubts)
1) What effect alpha and beta particle have in mass no. and atomic no. [2 marks]
2)Specific heat capacity of water -- 4.2 or 4186 [1 marks]
3) Factors on which radii of curvature depends. [2 marks]
4) 2 reason for laminating core of Transformer [2 marks]
5) Ratio of ionizing power of alpha, beta and gamma [3 marks] |
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| asked by Ansh Anand (teleansh) 5 years ago |
1 |
About the UCM acceleration "confusion", what are you guys writing?
My physics teacher told us to write the acceleration as variable..
Maybe if we support it with logic, we'll get marks |
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| asked by Ashish Mathew (ash_matt) 5 years ago |
2 | + 1 more questions by ash_matt
If we have to draw a diagram for Snell's LAW(only the sin i/sin r, rt? cause only one), should we just draw light travelling from a denser to a rarer medium, mark angles of incidence and refraction and state the law, or is there some other diagram?? |
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| asked by Ashish Mathew (ash_matt) 5 years ago |
1 |
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What purpose is served by the terminals of three way pin plug? |
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| asked by Vindhya Badal (_itsme_) 5 years ago |
4 |
Why does the focal length of a convex lens remain unchanged even when half of it is covered ? |
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| asked by Aiyra Baig (aiyra) 5 years ago |
2 |
I haven't started numericals yet... Any ideas how I should approach them? |
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| asked by Sahaj Shah (eternityseeker) 5 years ago |
2 |
which prism causes total internal reflection and refraction |
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| asked by Varun Khadpe (varunkhadpe) 5 years ago |
2 |
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