UrbanPro
Login Ask & Answer Success Stories Paid Courses Free Classes Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore

Hyderabad

Delhi

Mumbai

Chennai

Pune

Kolkata

Gurgaon

Ahmedabad

Jaipur

Noida

✕

Take Class 12 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Book a Free Demo

Class 12 Tuition > Learn Class XI-XII Tuition (PUC) > Why red is the sign of danger?
✕

Search in

Why red is the sign of danger?

Asked by Last Modified  

15 Answers

Learn Class XI-XII Tuition (PUC)

Follow 0
Answer

Please enter your answer

CSIR NET,UGC NET, GMAT, BANK P.O.,IIT FOUNDATION COURSE, QUANTITATIVE APTITUDE Etc.

Red colour is able to travel the longest distance & visible most from long distance.
Comments
Dislike Bookmark

Tutor

The primary reason why the color red is used for danger signals is that red light is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a color. Therefore blue which has the least wavelength of all the visible radiations is scattered...
read more
The primary reason why the color red is used for danger signals is that red light is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a color. Therefore blue which has the least wavelength of all the visible radiations is scattered the most and red which has the highest wavelength of all the colors we can see is scattered the least. So red light is able to travel the longest distance through fog, rain, and the alike. read less
Comments
Dislike Bookmark

Physics and Maths made easy

It is because red light is prone to least scattering (as per Rayleigh's formula) and hence it has maximum range through the air (atmosphere). This enables to see the signal (red) from a long distance.
Comments
Dislike Bookmark

Math Educator for Std.11th ,12th , Engineering Entrance and Degree Level with 11+ Years Experience

Because it has longer wavelength. we can see red colour sign from far distance in any weather.
Comments
Dislike Bookmark

Bachelor Of Engineering (Computer Science)

It have higf wavelength so it reach faster than any other colour.
Comments
Dislike Bookmark

Mathematics

Because red light is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a color. Therefore blue which has the least wavelength of all the visible radiations is scattered the most and red which has the highest wavelength of all...
read more
Because red light is scattered the least by air molecules. The effect of scattering is inversely related to the fourth power of the wavelength of a color. Therefore blue which has the least wavelength of all the visible radiations is scattered the most and red which has the highest wavelength of all the colors we can see is scattered the least. So red light is able to travel the longest distance through fog, rain, and the alike. read less
Comments
Dislike Bookmark

Tutor

It is because red light is scattered the least by air molecules. The effect of scattering is inversely proportional to the fourth power of wavelength of a colour. And because, red colour(among all the visible colours) has the highest wavelength, it gets scattered the least when compared to others.
Comments
Dislike Bookmark

Tutor

This property of least scattering makes it visible from a large distance and is thus, used as a sign of danger.
Comments
Dislike Bookmark

Mechanical Engineer

Wavelength of red light is more than other colors, thus can cover great distance and scattering by fog or rain or by air molecules is highly reduced. Thus making it the ideal color for danger sign.
Comments
Dislike Bookmark

Tutor

As scattering is inversely proportional to the 4th power of wavelength of light and the red colour light has highest wavelength among the visible colours so for this colour, scattering is the least as a result it can be visible easily through a long distance as well !!....that is why it is used as...
read more
As scattering is inversely proportional to the 4th power of wavelength of light and the red colour light has highest wavelength among the visible colours so for this colour, scattering is the least as a result it can be visible easily through a long distance as well !!....that is why it is used as the sign of danger. read less
Comments
Dislike Bookmark

View 13 more Answers

Related Questions

My qualifications are M.s.c (maths) B.ed and I have 1 year experience in a cbse school. Is there any job for me?
Try giving digital ads
Tina
0 1
9
The value of i power i is ........?
e^(-pi/2)
Kumar Upendra Akshay
0 1
7
How much MB/GB data is consumed while teaching online through Skype or hangout?
80-100 mb per hr
Rahul Choudhari
0 0
6
What is the integration process of e^x/(1+x)
such question is solved by using by parts but in this question by parts will not work in fact this not integrable
Upvan
What will be the IUPAC name of the hydrocarbon which under go reductive ozonolysis & gives 2-moles of cyclopropanone from each mole?
Its been already answered Kindly check once again
Pradeep K Singh

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Chemistry
What is pKa value of a weak acid? How is it related to its pH? Explain. PH depends on the concentration of the solution. This is important because it means a weak acid could actually have a lower...

Nidhi T.

0 0
0
Urilinga peddhiya vachanagalu - Shabdhartha

Sandhya

1 0
0
Electric current
Brief description about Electric Current:
B

BHARTI Coaching Institute

0 0
1
Vedic Mathematics:To find cube root of a cubic number within seconds
To find cube root of a cubic numbers: What are cubic numbers cube of 1= 1, (ends with 1),cube of 11= 1331 (ends with 1), and so on. cube of 2= 8, (ends with 8),cube of 12= 1728 (ends with 8),...
N

Naimish K.

0 0
0
How to score better?
Do you ever wonder why the different students studying in the same classroom, taught by the same teacher get different marks (taken into consideration that the comparison is accounting for sincere students)?...

Ashutosh Agarwal

4 0
1

Recommended Articles

Meet Sandhya R, a B.Sc tutor from Bangalore

Sandhya is a proactive educationalist. She conducts classes for CBSE, PUC, ICSE, I.B. and IGCSE. Having a 6-year experience in teaching, she connects with her students and provides tutoring as per their understanding. She mentors her students personally and strives them to achieve their goals with ease. Being an enthusiastic...

Read full article >

Meet Raghunandan.G.H, a B. Tech Tutor from...

Raghunandan is a passionate teacher with a decade of teaching experience. Being a skilled trainer with extensive knowledge, he provides high-quality BTech, Class 10 and Class 12 tuition classes. His methods of teaching with real-time examples makes difficult topics simple to understand. He explains every concept in-detail...

Read full article >

Meet Mohammad Wazid, a skilled trainer for...

Mohammad Wazid is a certified professional tutor for class 11 students. He has 6 years of teaching experience which he couples with an energetic attitude and a vision of making any subject easy for the students. Over the years he has developed skills with a capability of understanding the requirements of the students. This...

Read full article >

Meet Radhe Shyam Burman, an MBA Tutor from...

Radhe Shyam is a highly skilled accounts and finance trainer with 8 years of experience in teaching. Accounting is challenging for many students and that’s where Radhe Shyam’s expertise comes into play. He helps his students not only in understanding the subject but also advises them on how to overcome the fear of accounts...

Read full article >

Find PUC Tuition near you
PUC Tuition in Delhi
PUC Tuition in Bangalore
PUC Tuition in Hyderabad
PUC Tuition in Kolkata
PUC Tuition in Mumbai
PUC Tuition in Chennai
PUC Tuition in Pune
PUC Tuition in Jaipur
PUC Tuition in Lucknow
PUC Tuition in Noida
Online Tuition Class 12

Looking for Class 12 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Class 12 Tuition Classes?

The best tutors for Class 12 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 12 Tuition with the Best Tutors

The best Tutors for Class 12 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more

ThinkVidya Learning Pvt Ltd © 2010-2024All Rights Reserved