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Complete the following chart.
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| {:[" Speed of light in the "],[" first medium "(v_(1))]:} | {:[" Speed of light in the "],[" second medium "(v_(2))]:} | Refractive index _(2)n_(1) | Refractive index _(2)n_(1) |
| 3x10^(8)m//s | 1.2 x10^(8)m//s | - | |
| 2.25 x10^(8)m//s | 4//3 | ||
| 2x10^(8)m//s | 1.5 |
Write the IUPAC names of the following structural formulae:
A ray of light travelling in air is incident on a rectangular glass block and emerges out into the air from the opposite face. Draw a labelled ray diagram to show the complete path of this ray of light. Mark the two points where the refraction of light takes place. What can you say about the final direction of ray of light?
With reference to the given diagram answer the following questions:
i. Give type of chemical reaction.
ii. Give the names of reactants and products.
iii. Write down the balanced chemical equation.
i. Give type of chemical reaction.
ii. Give the names of reactants and products.
iii. Write down the balanced chemical equation.
Balance the following equation stepwise.
$Ag_{(s)} + HCl_{(aq)} \rightarrow AgCl ↓+ H_2↑$
→$Ag_{(s)} + HCl_{(aq)} \rightarrow AgCl ↓+ H_2↑$
Observe the following figure. Which bulb will fuse? (Practice Activity Sheet – 4)
Explain with suitable examples importance of anatomical evidences in evolution.
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Explain the importance of Anatomical evidences with examples.
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Explain the importance of Anatomical evidences with examples.
An object of $5.0\ cm$ size is placed at a distance of $20.0\ cm$ from a converging mirror of focal length $15.0\ cm$. At what distance from the mirror should a screen be placed to get the sharp image? Also calculate the size of the image.
→Complete the following table for convex lens:
→| Sr. No. | Position of the object | Position of the image | Nature of the image |
| (a) | Beyond $2 F_1$ | _____________ | _____________ |
| (b) | _____________ | At infinity | |
| (c) | _____________ | _____________ | Real, inverted and enlarged |
State any three differences between the physical properties of metals and non-metals.