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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Vedang Siddharth Thakare from SMT's Saraswati English Medium School., Thane
Class : Class 4

Ans 2:

Tejesh VB from GEMS New Millennium School, Al Khail, Dubai
Class : Class 8

Ans 3:

Virat from K l international, Meerut
Class : Class 5
You need to specify whether it is a waxing or waning crescent.

Ans 4:

Madhuri P from ,
Class : Class 4
you need to specify if waning or waxing crescent

Ans 5:

Jayanth from The Deens Academy, Bengaluru
Class : Class 4
You have to specify if waxing or waning crescent

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yagna from DPS, Surat
Subject :NSO    Class : Class 8

Ans 1:

Yatharth Agrawal from Indira National school, Pune
Class : Class 8
It must be B.The current finds a more direct path to Y, Making it brighter.But the current still reaches X because there is still a path. SOF Says otherwise.

Ans 2:

Advait talnikar from Dhruv Global School, Sangamner
Class : Class 6
The answer should be B as it will be closed circuit

Ans 3:

Triguna from Kendriya Vidyalaya No.1 Salt Lake, Kolkata
Class : Class 8
X will light up... I think it's incorrect....

Ans 4:

SaiKrishna from Chettinad Vidyashram, Chennai
Class : Class 3
Option D is correct because current prefers the path that offers less resistance. The bulb provides resistance whereas the switch when closed does not. Hence correct answer is D

Ans 5:

Priyanshi from Delhi Public School Agra, Agra
Class : Class 9
Yess,my answer was B also

Ans 6:

Akshay Malhan from NHSS, Thane
Class : Class 8
logically it should be B but sof says otherwise. why ????

Ans 7:

Prabhav Kaushik from DPS Noida, Noida
Class : Class 10

Ans 8:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb is correct as current will flow though X but I do feel that current will prefer less resistant path so D can also be correct

Ans 9:

Dev Rawat from R D Rajpal School, New Delhi
Class : Class 8
The answer is B

Ans 10:

AANYA BARANWAL from KPS SCHOOL, bhilai
Class : Class 5
answer should be B

Ans 11:

Amol Athawale from WoodRidge High, aurangabad
Class : Class 7
answer should be b because X will also lit up

Ans 12:

Vishwanath Halkeri from sudarshan vidya mandir, Bangalore
Class : Class 8

Ans 13:

Kingshuk Gupta from RN Podar school, Mumbai
Class : Class 9

Ans 14:

vatsal jay gandhi from new era senior secondary school, Vadodara
Class : Class 8
Please explain it. I am also confused about the answer. I myself did B.

Ans 15:

Nilanjana De from Delhi Public School North, Bengaluru
Class : Class 8
The answer key says that X will not light up,but why?

Ans 16:

Abhay Agarwal from St Francis School, Ghaziabad
Class : Class 9
yes i too did B

Ans 17:

Vaidheesh Bharadwaj from NPS, Bangalore
Class : Class 7
I too am confused as current will also flow through both the bulbs when circuit is closed. It will pass through the switch first and hence lighting up bulb Y.

Ans 18:

Avyukth Radhakrishnan from TSRS, Gurgaon
Class : Class 10
b

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DIKSHIT SUNDAR from vidhysaram, chennai
Subject :NSO    Class : Class 5

Ans 1:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 2:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10
Sorry all, I had not read the question well.😞😞

Ans 3:

Ujjwal Upadhyay from Navy Children school, Vasco
Class : Class 6
The answer is d

Ans 4:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
no chart no answer

Ans 5:

Hitarth Bhardwaj from Teoler High School, Jaipur
Class : Class 6
Veer Sehrawat, how c, the question says which town is located near an unpolluted river not a polluted river.

Ans 6:

Rishit Garg from Bhavan s B P Vidya Mandir , Nagpur
Class : Class 9

Ans 7:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
It is a very serious thing for us that we are getting wrong answers from SOF . It should be D only !

Ans 8:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 9:

Aaditya Malhotra from Isaac Newton Global School, Mumbai
Class : Class 3
D

Ans 10:

Anantjit Chander from Apeejay School, Sector 15, Faridabad
Class : Class 10

Ans 11:

Hitanshi Behera from Loyola School , Bhubaneswar
Class : Class 4
ans is D so easy

Ans 12:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Sorry , my brother changed the C into D . It should be C only !

Ans 13:

Sumit Biswal from Dps gandhinagar, Gandhinagar
Class : Class 7
I was a bit confused between C and D

Ans 14:

FAIZAN HUSSAIN from SYED ABID HUSSAIN SR. SEC. CHOOL (MIDDLE SECTION), DELHI
Class : Class 4
Low High Many Many

Ans 15:

shivan iyer from dr pillai global academy, MUMBAI
Class : Class 4
d

Ans 16:

ishaan from lvis, noida
Class : Class 5
c

Ans 17:

Suhani from DPSG, Modinagar
Class : Class 9
The answer is c

Ans 18:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

AHANA BAG from DELHI PUBLIC SCHOOL JOKA SOUTH KOLKATA, KOLKATA
Class : Class 9

Ans 2:

ishit from EUROSCHOOL THANE, THANE WEST
Class : Class 7

Ans 3:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
NA

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
What is mimicry?

Ans 2:

SIDDHARTH KUMAR CHATTERJEE from NAVY CHILDREN SCHOOL , CHICALIM
Class : Class 7
Mocking or copying.

Ans 3:

Ibrahim Aslam from uttam, Ghaziabad
Class : Class 5
😓😓copying

Ans 4:

Tejesh VB from GEMS New Millennium School, Al Khail, Dubai
Class : Class 8

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aadin josefina from sorsfort international school,
Subject :NSO    Class : Class 4

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Sargah Surya from bgsnps, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

Aarushi Upadhyayula from The Cambridge International School, Bengaluru
Class : Class 7
The answer D is correct. Magnetic field moves from North to South, and if you follow the direction of the compasses, you will see that this theory is true.

Ans 2:

Aryan Agarwal from Mayoor School, Noida
Class : Class 8

Ans 3:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 10
The correct and is D as the magnetic field moves from North to south

Ans 4:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9

Ans 5:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9

Ans 6:

Stuti Chakroborty from Jain Heritage School, Bangalore
Class : Class 6

Ans 7:

SJ HARITHA from PSNLO, BENGALURU
Class : Class 10

Post Your Answer

MARIA K PAUL from DON BOSCO SCHOOL OF EXCELLENCE EGMORE, CHENNAI
Subject :NSO    Class : Class 6

Ans 1:

chittaranjan kar from MLZS, Jaipur
Class : Class 3
No guys. Human eye can't focus simultaneously on two points. To avoid parallax error , eye should be on the point of measurement to be taken.Hence given answer is correct in my view. You may comment.

Ans 2:

AUSTIN from Viswajyothi CMI Public School, Chowara
Class : Class 7
i think its C

Ans 3:

Mansi Sadavarti from Vibgyor High, Pune
Class : Class 7
I agree with Aritroray the answer should be C

Ans 4:

from , Jajpur
Class : Class 6
the answer will be both a and b

Ans 5:

aritroray from Chirec International School, Hyderabad
Class : Class 8
I think it should be C because otherwise the zero end can shift slightly (in our viewpoint) and measurement will be wrong. So both statements a and b are correct and the answer is C.

Ans 6:

atharv nila from VIBGYOR, Bengaluru
Class : Class 6

Ans 7:

Anushka Srivastava from Cjm, Dehradun
Class : Class 7
no because what will u do of zero u have to

Ans 8:

Rahil from Delhi Public School Faridabad, Faridabad
Class : Class 7
No as it causes a parallax error. It should be option A. If you don't believe me then try it yourself with a scale and measuring a line segment from different eye positions. You will see that, the measurement varies slightly every time. That's why option A is correct.

Ans 9:

Subhang Deep Sahu from Narayana CO Kadugodi Bangalore, Bangalore
Class : Class 8

Ans 10:

sujata patel from Podar International, Pune
Class : Class 6
cccccccccccc

Ans 11:

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Class : Class 10
GIVEN ANSWER IS NOT CORRECT AS A IS THE CORRECT ANSWER

Ans 12:

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Class : Class 10

Ans 13:

sujata patel from Podar International, Pune
Class : Class 6
it is simple that while measuring, at first you eye must be vertically above 0

Post Your Answer

Sargah Surya from bgsnps, Bengaluru
Subject :NSO    Class : Class 6

Ans 1:

arnav from Dps noida, Delhi
Class : Class 8
a

Ans 2:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Sachin is being tested for his eyesight by an optician.Now, let’s read the given information carefully, and find out the position of Sachin.Sachin sits 3 m in front of a plane mirror, and looks at the image of the chart of letters, which seems to be 7 m in front of him.This means the distance between the mirror and the image of the chart is (7 m – 3 m = 4 m). If the image of the chart is 4 m behind the mirror, then the actual chart is placed 4 m in front of mirror.Now the chart is placed 4 m in front of the mirror, and Sachin is sitting 3 m in front of the mirror. That means the chart is placed (4 m – 3 m = 1 m) behind Sachin. Hence, the right answer is Option A.

Ans 3:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 10
A

Ans 4:

Bhavtosh Tripathi from Maneckji Cooper Education Trust School, Mumbai
Class : Class 9

Ans 5:

Aarohi Srihari Torgal from V.V.S B.M Sri Educational Institutions , Mysure
Class : Class 6
A

Ans 6:

Rahil from Delhi Public School Faridabad, Faridabad
Class : Class 7
A as image is as far behind the mirror as Object is in front of it. In this case Sachin is 3 m in front of the mirror and the object seems to be seven meters ahead. As Sachin is 3 m in front of the mirror that means object is (7-3) = 4 m behind the mirror. As image is as far behind the mirror as Object is in front of it, It means chart is 4 meters in front of the mirror. ( 4 - 3 ) = 1 m behind Sachin as Sachin is also in front of the mirror. Hope that answers your question !

Ans 7:

ttraj from KV IIT, Chennai, Chennai
Class : Class 3
A

Ans 8:

Vasu tyagi from St Joseph's High school, Panvel
Class : Class 6
Sachin is being tested for his eyesight by an optician.Now, let’s read the given information carefully, and find out the position of Sachin.Sachin sits 3 m in front of a plane mirror, and looks at the image of the chart of letters, which seems to be 7 m in front of him.This means the distance between the mirror and the image of the chart is (7 m – 3 m = 4 m). If the image of the chart is 4 m behind the mirror, then the actual chart is placed 4 m in front of mirror.Now the chart is placed 4 m in front of the mirror, and Sachin is sitting 3 m in front of the mirror. That means the chart is placed (4 m – 3 m = 1 m) behind Sachin. Hence, the right answer is Option A.

Ans 9:

Admin fly from Ddssxxx, Ax
Class : Class 1

Ans 10:

Admin fly from Ddssxxx, Ax
Class : Class 1
A

Ans 11:

Nandan Makineni from VIBGYOR HIGH, Bangalore
Class : Class 6

Ans 12:

Ishir Jha from Gyan Ganga Global Academy, Rosera
Class : Class 8

Ans 13:

Prathamesh Raje from DPS Electronic City, Bangalore
Class : Class 9

Ans 14:

Shriya Sreekrishna from BLUEBELLS SCHOOL INTERNATIONAL, New Delhi
Class : Class 7

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