cie physics mcqs

[thecandydoll]

Physics Paper 1 CIE.
2009 June.
Q13,Q15,Q18,Q20,Q21,Q24


Thank you so much
xoxo

[cs]

I have more or less the same question to ask.. I think it is AS right..?

[Deadly_king]

Physics Paper 1 CIE.
2009 June.
Q13,Q15,Q18,Q20,Q21,Q24


Thank you so much
xoxo

Wel......you are working fast girls.........am still with the 2008 papers

Anw i'll take a look at the numbers for ya but i'll be brief. If you dont understand, then i'll elaborate...ok??

18. Increase in pressure is 2heg since the liquid moves by a distance of h in both limbs,i.e h in the first limb and again h in the second limb. so this makes two h.


Answer is D

20. Youngs Modulus = Y= FL/eA where F : force, L :length of wire, e : extension produced and A : area of cross-section.

Since both wires are made of steel ---->same Y
It is said that extension is also the same.

IN other words we can deduce that F is proportional to A/L.
F is taken as the tension.

F_p = A/L
F_q = 0.5A/2L

therefore F_p/F_q = 4

Answer is D

21.Energy stored is given by the area under graph.

Area under graph : (0.5 x 0.1 x 5) + (6 x 0.1) + ( 0.5 x ( 17+6) x 0.1) = 2.0J

Answer is A

24.Half a wavelength is the distance from one antinode to another.

A node is found between two consecutive antinodes.

Answer is B


Am still working on the first two....