Physics paper 1 question

[omaaaar]

Q6-weight of 8 disks=3 N and the weight for 2 disks=1.2 N
weight of 6 disks removed=3-1.2=1.8N
so weight of one disk=1.8/6=0.3 N
Q9-length of un_extended spring=15 cm
length of spring with load=16.4 , so the extension is =16.4-15=1.4
from graph find he load which will be 3.5 N so the answer is C
Q22-ttis depend on mirror.write the word LEFT on paper and see the image on mirror.u will notice that the word will be laterally inverted(left to right),so the answer will be B
Q38-now the number 0f emsstion/second is N,and this radioactive element has a half life of 70 seconds(this means that every 70 seconds the activity of element drop by half),70 seconds earlier(before 70 seconds) the emission will be twice of that N so it will be 2N,so answer is D
Hope i have helped
DONT HESITATE TO ASK UR DOUBTS AND IF U NEED MORE DETAILED DOUBTS
Gd luck

Thanks for the answers

 

[omaaaar]

Could you please answer my doubts

 

[$$AK$$]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s10_qp_11.pdf
Q16
Q17
Q19

Q16-There are 2 fixed points:
1-lower fixed point which is always 0*C
2-Upper fixed point which is always 100*C
so the answer is is "C"
Q17-READ THE QUESTION CAREFULLY.the question says"The graph shows how the temperature of the wax changes as it cools. so as it cools,it will lose temperature to the surrounding,thus" At Y thermal energy is being given out by the wax".This is because the ice is freezing at the melting point,so it is losing energy.as a result the answer is "C"
Q19-We know that the cold air is more dense than the hot air so it will sink,the smoke at P will be cold so it will sink,thus the answer is D

 

[$$AK$$]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w09_qp_11.pdf
Q33
Q36

Q33-usually,we should be careful for the insulation of electrical cables in our homes,otherwise if the insulation is demaged there will be a chance of getting electric shock(la sama7 allah),so in this question it is the same as the power cable of the drill is damaged where it enters the metal casing of the drill,the current could pass through the builder and electrocute him,which makes the answer "A"
Q36-This question is very easy ,the beam of cathode rays is negatively charged,so it will be attracted toward the positive charge,so it will move downward which makes the answer "A"
Hope that i have helped

Do i deserve a like from u
Good luck in ur exam,BUT JUST BE RELAXED AND READ THE QUESTION CAREFULLY

 

[omaaaar]

Q16-There are 2 fixed points:
1-lower fixed point which is always 0*C
2-Upper fixed point which is always 100*C
so the answer is is "C"
Q17-READ THE QUESTION CAREFULLY.the question says"The graph shows how the temperature of the wax changes as it cools. so as it cools,it will lose temperature to the surrounding,thus" At Y thermal energy is being given out by the wax".This is because the ice is freezing at the melting point,so it is losing energy.as a result the answer is "C"
Q19-We know that the cold air is more dense than the hot air so it will sink,the smoke at P will be cold so it will sink,thus the answer is D

Why will the smoke at P be cold

 

[omaaaar]

Q33-usually,we should be careful for the insulation of electrical cables in our homes,otherwise if the insulation is demaged there will be a chance of getting electric shock(la sama7 allah),so in this question it is the same as the power cable of the drill is damaged where it enters the metal casing of the drill,the current could pass through the builder and electrocute him,which makes the answer "A"
Q36-This question is very easy ,the beam of cathode rays is negatively charged,so it will be attracted toward the positive charge,so it will move downward which makes the answer "A"
Hope that i have helped

Do i deserve a like from u
Good luck in ur exam,BUT JUST BE RELAXED AND READ THE QUESTION CAREFULLY

Ofcourse

 

[omaaaar]

Q33-usually,we should be careful for the insulation of electrical cables in our homes,otherwise if the insulation is demaged there will be a chance of getting electric shock(la sama7 allah),so in this question it is the same as the power cable of the drill is damaged where it enters the metal casing of the drill,the current could pass through the builder and electrocute him,which makes the answer "A"
Q36-This question is very easy ,the beam of cathode rays is negatively charged,so it will be attracted toward the positive charge,so it will move downward which makes the answer "A"
Hope that i have helped

Do i deserve a like from u
Good luck in ur exam,BUT JUST BE RELAXED AND READ THE QUESTION CAREFULLY

Extremely sorry I wanted the answers to variant 12

 

[$$AK$$]

Why will the smoke at P be cold

I dont mean that it will be cold as what ur tinking ,but i mean that it will be more dense and cooler than that which is directly above the candle.
hope that u understand

Do u need more explanation??

 

[omaaaar]

I dont mean that it will be cold as what ur tinking ,but i mean that it will be more dense and cooler than that which is directly above the candle.
hope that u understand

Do u need more explanation??

Yes a bit

 

[omaaaar]

Here is the link of the correct paper http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w09_qp_12.pdf

 

[$$AK$$]

Extremely sorry I wanted the answers to variant 12

but u have downloaded the link for paper 11

 

[omaaaar]

I was solving in the past paper booklet and didnot see the variant before asking the question

 

[omaaaar]

Sorry,my bad

 

[$$AK$$]

Here is the link of the correct paper http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w09_qp_12.pdf

Q33-The answer is "C".This is because a relay is an electromagnet which switches on a more powerful circuit from a small circuit.I think that if you refer to ur textbook,topic:relay,it will be more poerful
Q36-The answer is "D".this is because the temperature should be high and we need D.C to make the anode positive and the cathode negative
Hope that i helped

 

[$$AK$$]

Sorry,my bad

Dont worry keep smiling
where do u live?

 

[omaaaar]

Dont worry keep smiling
where do u live?

Saudi Arabia (Jeddah)

 

[omaaaar]

And yes where do you live

 

[$$AK$$]

Saudi Arabia (Jeddah)

So good luck.I think ur exam is at 3:00

 

[omaaaar]

And thanks for helping

 

[omaaaar]

So good luck.I think ur exam is at 3:00

Yes it's at 3