Question

Friends please answer my questions . this question is of 13 points. I will select you as a brainiest if only you answer them all correct .........It's a competition between you all ......all the best:)
1. Give two examples of the substances which show sublime.
2.Conduction is slowest mode of transmission of heat T/F.
3.Expansion of all gases is same for the same rise in temperature F/T
4.Shooting stars are non-luminous bodies T/F
5.Deep sea water is transparent mediumF/T
6.Correct this statement. ... Solar eclipse takes place more frequently than the lunar eclipse .
7.Why is solar eclipse not very frequent?
8.Why is lunar eclipse more frequent compared to solar eclipse?
9.Correct the statement......Any ray of light which initially passes through the principal focus of a spherical mirror after reflection passes through centre of curvature.
10.A concave mirror can be used to obtain real and magnified image.T/F
11. Why os lunar eclipse a more frequent phenomenon than solar eclipse?

HOPE U ANSWER ALL OF THE ABOVE QUESTIONS :)

Answer 1

1. Ammonium chloride, Iodine, napthelene
2. False
3. False
4. False
5. True
(Lunar eclipses are more common, it's a matter of sizes of shadows. The moon is over the horizon and the lunar Orbit is smaller in size.
The eclipses are usually same in number but lunar eclipses are more visible.
The solar orbit is larger and the sun has a huge size , that's why solar eclipses are less frequently seen.) - For questions 6,7,8,11
9. Any ray that passes through the principal focus after reflection becomes parallel to the principal axis.
10. False

Answer 2

Explanation:

$\huge\bold{\underline{\underline{\red{Global\:warming}}}}$

Climate change includes both the global warming driven by human emissions of greenhouse gases, and the resulting large-scale shifts in weather patterns