National Science Olympiad Forum By SOF Olympiad Trainer - Page 596
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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB
Subject :NSO    Class : Class 6

Ans 1:

a from a, Ghaziabad
Class : Class 7
Hey there! None of the options are correct.

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
scurvy, a deficiency of vitamin C. Beriberi is a disease caused by a vitamin B-1 deficiency Pellagra is a disease caused by low levels of niacin, also known as vitamin B-3 Rickets is caused by deficiency of Vitamin D Hence no answer is correct

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
scurvy, a deficiency of vitamin C. Beriberi is a disease caused by a vitamin B-1 deficiency Pellagra is a disease caused by low levels of niacin, also known as vitamin B-3 Rickets is caused by deficiency of Vitamin D Hence no answer is correct

Ans 4:

Krishna Gupta from Greenfield public school, Delhi
Class : Class 8
Pellagra

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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB
Subject :NSO    Class : Class 6

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aryan vir from lotusvalley international school gurugram, Gurgaon
Subject :NSO    Class : Class 7

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aryan vir from lotusvalley international school gurugram, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

Vedant from Prudence School , Delhi
Class : Class 9
It is stupid answer explanation

Ans 2:

Rudra Tripathi from DPS Noida, Noida
Class : Class 10
Dude it should be 35 degree as angle of incidence = angle of reflection the solution is wrong

Ans 3:

Rishith Sunil from BVM global, CHENNAI
Class : Class 6

Ans 4:

Ryan Ganguly from Ebenezer International School, Bangalore
Class : Class 8
Law of reflection:angle of incidence= angle of reflection This formula is only used when the angles are measured from the normal to the ray and not from the ray to the mirror. In this diagram we see that the angle is measured from the ray to the mirrot .The normal measures 90° so we need to subtract 90° from 35° to get the angle of incidence which is 55° . We now that angle of incidence= Angle of reflection hence the answer will be 55°

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aryan vir from lotusvalley international school gurugram, Gurgaon
Subject :NSO    Class : Class 7

Ans 1:

Agastya Tripathi from dps gurgaon, Gurgaon
Class : Class 4

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
if a person moves closer to the plane miror , ,would not size of the imagge become larger ,??????? WHy the statement saying that if a eprson moves near to a plane mirror , the image of the person would emain same in size??? SOF , please correct the answer of the question.. I am finding too many wrong quesions nowadays

Ans 3:

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Class : Class 9

Ans 4:

ujjwal from Rockwell, Hyderabad
Class : Class 5

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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB
Subject :NSO    Class : Class 6

Ans 1:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 10
The answer is frosted glass because we can see through it faintly.

Ans 2:

Krishna Gupta from Greenfield public school, Delhi
Class : Class 8
Oiled paper

Ans 3:

a from a, Ghaziabad
Class : Class 7
Answer is option b) Frosted Glass.

Ans 4:

Ashher Pervez from DPS Bhilai, Bhilai
Class : Class 10
The answer is frosted glass because we can see through it faintly.

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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB
Subject :NSO    Class : Class 6

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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB
Subject :NSO    Class : Class 6

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DEEPINDER SINGH from SAINT JOSEPH'S SCHOOL, BATHINDA, BATHINDA, PUNJAB
Subject :NSO    Class : Class 6

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Sreejan Das from Oriental Public School, kalyani
Subject :NSO    Class : Class 8

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