Why paper catches fire when a convex lens is used to ficus sunlight?

Asked by Last Modified  

5 Answers

Learn Science +1

Follow 17
Answer

Please enter your answer

Srivanthi Muralidharan

Experienced science teacher, CBSE and state board

covex lens concentrate the sun rays onto a small area, which heats up the area, then the exposed surface will ignited, {it is a converging lengs, that is it will converge the rays falling on it into single strong beam.
Comments
Dislike Bookmark

Tutor

As convex lens are convergent ,they focus all the rays at single point on paper. Due to intense heat at a point the paper burns
Comments
Dislike Bookmark

Teacher

A convex lens focuses sun light at a point on the paper. The photons in the sun light have energy. These are concentrated at one point and a lot of heat is generated. As there is combustible material (paper), oxygen ( in the air) and the heat energy raises the temperature at the focal point to over the...
read more
A convex lens focuses sun light at a point on the paper. The photons in the sun light have energy. These are concentrated at one point and a lot of heat is generated. As there is combustible material (paper), oxygen ( in the air) and the heat energy raises the temperature at the focal point to over the flash point for paper, a fire starts read less
Comments
Dislike Bookmark
As convex lens are convergent ,they focus all the rays at single point on paper. Due to intense heat at a point the paper burns
Comments
Dislike Bookmark

Tutor

Because convex lense concentrate all the incident sun light and focus it on a point and increase the intensity of light which causes fire on that focus point
Comments
Dislike Bookmark

View 3 more Answers

Related Questions

If we light a torch then diverging beam of light are produced. But we use concave mirror in the torch to attain parallel beam of light. So what is the connection between this?
Concave mirror is use to get focused and long distant parrallel light and this ia an application of concave mirror. As above diagram you can see the passage of parallel light comming out after reflection...
Richika

Where shall I get the syllabus for class tenth science (CBSE), and from which chapter do we generally start teaching? Should we provide the notes too? How shall I start the first class?
For the syllabus, please visit the Jagranjosh education column. The chapter I recommend to start with is SI units, introduction to scalar and vector quantities, periodic table concerning metals and non-metals,...
Sona
What is the radius of curvature of plane mirror?
the focal length of plane mirrors is considered to be infinite, as the radius of curvature is infinite. However, imagine this scenario: You have a perfectly flat (no one get mad, this is theoretical)plane...
Rajitha
0 0
5
The magnification produced by a plane mirror is +1. What does it mean?
Magnification produced by a plane mirror is +1. It means the size of the image is equal to the size of the object and the image is virtual. Size of image is equal to size of object
Bhupen
0 0
6
What is a redox reaction?
A redox (or oxidation-reduction) reaction is a type of chemical reaction that involves a transfer of electrons between two species (atom, molecule or ion). Here oxidation as well as reduction takes place...
Sona

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

Ask a Question

Related Lessons

Ayushi S.

1 0
0
Is space exploration a waste of money?
It's obvious to me you have simply read someone else's BS account that states space exploration is a waste. The statement is so far from the truth it disgusts me. Let me see if I can briefly explain...

Sujoy Das

0 0
0

Azumthulla Gilledmanda

0 0
0

Utkal Roy

0 0
0
Law of resistance in series

Rahul J.

1 0
0

Recommended Articles

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 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 >

Quest Academy - Institute of the month

Quest Academy is a professional Bangalore based NEET and JEE (Main + Advanced) training institute. The academy was incorporated in 2015 to cater to the needs of students, who aim to crack competitive exams by connecting with the best brains around. The institute helps students enhance their skills and capabilities through...

Read full article >

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 >

Find Class 10 Tuition near you
Class 10 Tuition in Delhi
Class 10 Tuition in Bangalore
Class 10 Tuition in Hyderabad
Class 10 Tuition in Kolkata
Class 10 Tuition in Chennai
Class 10 Tuition in Mumbai
Class 10 Tuition in Pune
Class 10 Tuition in Lucknow
Class 10 Tuition in Noida
Class 10 Tuition in Gurgaon
Online Tuition Class 10

Looking for Class 10 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you