National Science Olympiad Forum By SOF Olympiad Trainer - Page 523

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
A

Ans 2:

Class : Class 6
A

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Although the explanation is correct, it does not match the answer

Ans 2:

Class : Class 9
YES , their answer is not matching with their solution !!

Ans 3:

Class : Class 3
ayush u are right!!!!!!!!!!!!!!!

Ans 4:

Class : Class 7
Given correct answer and explanation do not match...please rectify...

Ans 5:

Class : Class 7
Answer and solution are completely different, they are not matching!The solution is correct, but their ans is wrong

Ans 6:

Class : Class 7
There is no option only for the answer they had provided us with, gave the correct explanation but the need to correct the answer as well.

Ans 7:

Class : Class 7
why arent they changing the answer

Ans 8:

Class : Class 6
The option selected here is wrong.

Ans 9:

Class : Class 9

Ans 10:

Class : Class 7
they aren't giving the answer and the solution same in some papers

Ans 11:

Class : Class 5

Ans 12:

Class : Class 9
please explain. your solution doesn't match the correct answer provided by you.

Ans 13:

Class : Class 6
The answer does not match with the solution. There should be a change in the answer.

Ans 14:

Class : Class 6
correct option is C, not B. Please make correction.

Ans 15:

Class : Class 4
What is this? Answer and solution are completely different, they are not matching!

Ans 16:

Class : Class 4

Ans 17:

Class : Class 8
Pls rectify.

Ans 18:

Class : Class 9
The correct is NSN

Ans 19:

Class : Class 3

Ans 20:

Class : Class 10
clear objection

Ans 21:

Class : Class 6
NA

Ans 22:

Class : Class 9
yes !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 23:

Class : Class 10

Ans 24:

Class : Class 7

Ans 25:

Class : Class 6

Ans 26:

Class : Class 8
The ans is not matching!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
the answer is wrong

Ans 2:

Class : Class 4
Answer is wrong

Ans 3:

Class : Class 7
The swing completes 25 oscillations in 5 seconds So, It will complete 1 oscillation in 5/25 seconds = 0.2 secondsSo, the time period of the swing is 0.2 seconds. Hence, the right answer is Option C.

Ans 4:

Class : Class 7
wrong answer. should be 0.2s

Ans 5:

Class : Class 6

Ans 6:

Class : Class 7
The time taken to complete one oscillation - a left swing and a right swing - is called the time period (T); it is measured in seconds.A swing takes 5 seconds to complete 25 oscillations. That means it would take 1 second to complete 25 ÷ 5 = 5 oscillations. That also means it would take 1 ÷ 5 = 0.2 seconds to complete 1 oscillation.So, the time period of the swing is 0.2 seconds. Hence, the right answer is Option C.

Ans 7:

Class : Class 7

Ans 8:

Class : Class 7
The answer is wrong. It is 0.2

Ans 9:

Class : Class 8
I think this answer is wrong. It should be 0.2 seconds, according to the definition of a Time Period in oscillatory motion.

Ans 10:

Class : Class 7
The answer seems to be wrong. 5 seconds to complete 25 oscillations. That means for one oscillation it is 5/25 = 0.2 seconds. 'Period' usually means one complete oscillation that is 0.2 seconds and that is not given.

Ans 11:

Class : Class 8

Ans 12:

Class : Class 10
the answer is wrong , it should be 0.2s. please kindly provide the solution to this question.

Ans 13:

Class : Class 8
According to definition - answer would be 0.2 s

Ans 14:

Class : Class 8
please explain the answer

Ans 15:

Class : Class 10
According to definition - answer would be 0.2 s

Ans 16:

Class : Class 7
I THINK IT COMPLETES 25 OSCILLATIONS IN 5s

Ans 17:

Class : Class 6
The answer has to be 0.2 seconds(5/25). Pls correct

Ans 18:

Class : Class 10
answer is wrong it should be 0.2 s

Ans 19:

Class : Class 6
The answer should be 0.2 s

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
option b is the correct answer

Ans 2:

Class : Class 7

Ans 3:

Class : Class 9
i checked in google. ans is a

Ans 4:

Class : Class 7
Option B

Ans 5:

Class : Class 8
option a

Ans 6:

Class : Class 9

Ans 7:

Class : Class 7

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Yes!I checked it on Google!IT IS FULL MOON!!!!!!????

Ans 2:

Class : Class 5

Ans 3:

Class : Class 3
C

Ans 4:

Class : Class 6
if the answer is c, then they would have mentioned that it is a lunar eclipse. so it should be b

Ans 5:

Class : Class 5
it is b

Ans 6:

Class : Class 9
c

Ans 7:

Class : Class 5
THE MOON IS NOT STRAIGHT TO THE EARTH. MOON HAS SLIGHT SLANTING REVOLUTION. THAT IS WHY WE HAVE DIFFERENT PHASES OF THE MOON. IF THE MOON IS AT THE POSITION OF..... SUN---EARTH---MOON.......SO THAT WILL BE FULL MOON. FULL MOON IS GIVENN AT OPTION B. SO MOST OF US LIKE ME DID B BUT IT IS SHOWING C AS THE CORRECT ANSWER. BUT AS I THINK THAT EVERYTHING HAS A REASON.1. THE SOLUTION IS THE MEANINGFUL WAY IT IS GOOD. BUT IF YOU OPPOSE THIS, SO 2. THAT THE CHART IS SHOWING THAT....... SUN-----EARTH-----MOON. SO ACCORDING TO THE CHART, IT IS A LUNAR ECLIPSE IN WHICH THE MOON IS COMPLETLY BLACK. SO OPTION C HAS A REASON. SHARE YOUR IDEAS ALSO.

Ans 8:

Class : Class 9
How come it is C ? This is insane!!!

Ans 9:

Class : Class 8
It will cause full moon ???

Ans 10:

Class : Class 4
b is answer

Ans 11:

Class : Class 5
The answer is b not c

Ans 12:

Class : Class 4

Ans 13:

Class : Class 5
This is wrong i thinkThe answer should be C

Ans 14:

Class : Class 7
It is showing C as the answer to this question

Ans 15:

Class : Class 5
IT SHOULD NOT BE C! B IS THE RIGHT ANSWER. IF SUN EARTH MOON= FULL MOON. IF SUN MOON EARTH = NEW MOON. .

Ans 16:

Class : Class 5
It is a full moon and I had enough of your mistakes SOF now, I am going to beat you people.

Ans 17:

Class : Class 6
moon does not have its own light it reflects of sun and as it is completely blocked by earth the suns light does not reflect and we do not see any phase of the moon .hence ans is c

Ans 18:

Class : Class 6
but how?

Ans 19:

Class : Class 8

Ans 20:

Class : Class 6
Moon will get no sunlight.THIS ISN’T POSSIBLE!!!!!

Ans 21:

Class : Class 6
how is this possible

Ans 22:

Class : Class 5
This is absolutely incorrect. SOF should verify such answers. The question is about the phase of the moon. Even if it is a lunar eclipse it falls on a full moon day. The answer is B

Ans 23:

Class : Class 1
I think that c is correct as the moon is behind the earth , so there will be no light reaching the moon . Thus, it will be new moon .

Ans 24:

Class : Class 5
According to any phases of the moon diagram, a full moon will be behind the Earth. Even lunar eclipse will be on a full moon day . New moons position will be the opposite of a full moon,i.e. between the earth and sun

Ans 25:

Class : Class 5

Ans 26:

Class : Class 5
Full moon occurs when light is spread all over the surface of the moon...but in the picture the moon is blocked by earth and the moon will remain dark.Hence,the answer is (c) new moon

Ans 27:

Class : Class 7

Ans 28:

Class : Class 4
only c

Ans 29:

Class : Class 8

Ans 30:

Class : Class 6
b) IT SHD BE FULLLLLLLLLLLLLL MOOOOOOOOOOOOOON!?!??!

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
r is slightly above them so it has less pressure and there is a block above p so the answer is (C)

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
The three dots are not at the same depth. P and Q are at the same depth, but R is slightly above both of them.

Ans 4:

Class : Class 9
doubtthey aren't at the same depthlook carefully sof

Ans 5:

Class : Class 8
I agree, I feel they are different

Ans 6:

Class : Class 10
yes they aren't at same depth

Ans 7:

Class : Class 9
R is at a slightly higher depth

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
THE ANSWER IS B

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
C

Ans 2:

Class : Class 5
the tide happens due to moon's gravity

Ans 3:

Class : Class 7

Ans 4:

Class : Class 5
Gravitational pull of the moon is the correct answer.

Ans 5:

Class : Class 7
an

Ans 6:

Class : Class 1
Tides are caused by the gravitational pull of the moon

Ans 7:

Class : Class 7
The answer is C

Ans 8:

Class : Class 7

Ans 9:

Class : Class 9
C for cat

Ans 10:

Class : Class 6
C

Ans 11:

Class : Class 5
C

Ans 12:

Class : Class 8
correct answer is c graavitional pull by earth

Ans 13:

Class : Class 7
The answer is C because tides are caused due to Gravitational pull of moon

Ans 14:

Class : Class 5
My answer is C. I have written it wrong as A

Ans 15:

Class : Class 7
c

Ans 16:

Class : Class 7
C

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