National Science Olympiad Forum By SOF Olympiad Trainer - Page 524

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
The answer should be 0.2 s

Ans 2:

Class : Class 7
wrong answer. should be 0.2s

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
I THINK IT COMPLETES 25 OSCILLATIONS IN 5s

Ans 5:

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

Ans 6:

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 7:

Class : Class 7

Ans 8:

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

Ans 9:

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

Ans 10:

Class : Class 6

Ans 11:

Class : Class 9
the answer is wrong

Ans 12:

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

Ans 13:

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

Ans 14:

Class : Class 8

Ans 15:

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 16:

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

Ans 17:

Class : Class 8
please explain the answer

Ans 18:

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 19:

Class : Class 4
Answer is wrong

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 8
option a

Ans 4:

Class : Class 8
option b is the correct answer

Ans 5:

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

Ans 6:

Class : Class 9

Ans 7:

Class : Class 7
Option B

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

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 2:

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 3:

Class : Class 6
but how?

Ans 4:

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 5:

Class : Class 5
The answer is b not c

Ans 6:

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 7:

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 8:

Class : Class 9
c

Ans 9:

Class : Class 6
how is this possible

Ans 10:

Class : Class 5
it is b

Ans 11:

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

Ans 12:

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 13:

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

Ans 14:

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

Ans 15:

Class : Class 4
only c

Ans 16:

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

Ans 17:

Class : Class 3
C

Ans 18:

Class : Class 7

Ans 19:

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

Ans 20:

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 21:

Class : Class 4
b is answer

Ans 22:

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

Ans 23:

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 24:

Class : Class 8

Ans 25:

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 26:

Class : Class 8

Ans 27:

Class : Class 5

Ans 28:

Class : Class 5

Ans 29:

Class : Class 4

Ans 30:

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

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

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

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
R is at a slightly higher depth

Ans 5:

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 6:

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

Ans 7:

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

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5

Ans 2:

Class : Class 8
THE ANSWER IS B

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
C

Ans 2:

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

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7
an

Ans 5:

Class : Class 9
C for cat

Ans 6:

Class : Class 7
C

Ans 7:

Class : Class 7
The answer is C

Ans 8:

Class : Class 7

Ans 9:

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

Ans 10:

Class : Class 5
C

Ans 11:

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

Ans 12:

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

Ans 13:

Class : Class 7
c

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 7
C

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
Master answer needed!

Ans 2:

Class : Class 6
option c

Ans 3:

Class : Class 6
both option c and d are the same.

Ans 4:

Class : Class 8
option D isn't having stapler and seesaw

Ans 5:

Class : Class 7

Ans 6:

Class : Class 6

Ans 7:

Class : Class 9
option d has the same answer as option c

Ans 8:

Class : Class 9
YES

Ans 9:

Class : Class 6
I mean wwwhhhaaattttt???? C AND D ARE SSSAAAMMMEEE!!!!

Ans 10:

Class : Class 7
This question make absolutely no sense.

Ans 11:

Class : Class 8
options c and D are same. question needs correction

Ans 12:

Class : Class 2

Ans 13:

Class : Class 3
C and d are same………

Ans 14:

Class : Class 8

Ans 15:

Class : Class 5
What is the difference between option C and D

Ans 16:

Class : Class 5

Ans 17:

Class : Class 9
C AND D ARE THE SAME YOU ARE RIGHT

Ans 18:

Class : Class 8
both c and d are the same ...................... how can they show option d is stapler and seesaw.......

Ans 19:

Class : Class 6

Ans 20:

Class : Class 7
There's no difference between the option C and D .

Ans 21:

Class : Class 9

Ans 22:

Class : Class 8

Ans 23:

Class : Class 7

Ans 24:

Class : Class 6
i am confused i am confused to opt between C

Ans 25:

Class : Class 5
fooliesh

Ans 26:

Class : Class 10
OPTION C AND OPTION D ARE SAME .SO IT CAN BE C ALSO .THE QUESTION IS WRONG .THE QUESTION NEEDS CORRECTION ........

Ans 27:

Class : Class 8
????????option C and D?

Ans 28:

Class : Class 4

Ans 29:

Class : Class 7
ya! option C and D are the SAME!

Ans 30:

Class : Class 6
option c

Ans 31:

Class : Class 6

Ans 32:

Class : Class 3
you are right both the options are the same

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
What Is [ii] ?

Ans 2:

Class : Class 3
B

Ans 3:

Class : Class 5
1,2,3 are sourced from roots.

Ans 4:

Class : Class 6

Ans 5:

Class : Class 2
1,2,3 are foods sourced roots

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