Light is invisible until it hits an object. It can only be visible to us whenever it get scattered or bounced off the dust particles in the intervening medium. We can see the source of light like stars at night as they are too dim to light up much but that light does hit our eyes and therefore we see the light. The above discussion on visibility of light is only confined to the electromagnetic radiation of wavelength from 400 nm to 700 nm which is called visible light, as these electromagnetic radiations gives the sensation of sight.
Light is, perhaps, the most wonderful of all visible things.
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Case Study Questions for Class 11 Physics Chapter 8 Gravitation
Case Study Questions for Class 11 Physics Chapter 8 Gravitation Here we are providing case study questions for class 11 physics chapter 8 Gravitation. Students can practice these questions for better understanding of case study type questions. Case Study Questions: Question 1: Earth’s SatelliteEarth satellites are objects which revolve around the earth. Their motion is … Continue reading Case Study Questions for Class 11 Physics Chapter 8 Gravitation
Case Study Questions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion
Case Study Questions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion Here we are providing case study questions for class 11 physics chapter 7 System of Particles and Rotational Motion. Students can practice these questions for better understanding of case study type questions. Question 1: Centre of Mass The centre of … Continue reading Case Study Questions for Class 11 Physics Chapter 7 System of Particles and Rotational Motion
Case Study Questions for Class 11 Physics Chapter 6 Work Energy and Power
Case Study Questions for Class 11 Physics Chapter 6 Work Energy and Power Here we are providing case study questions for class 11 physics chapter 6 Work, Energy and Power. Students can practice these questions for better understanding of case study type questions. Case Study Questions: Question 1: Potential Energy of SpringThere are many types … Continue reading Case Study Questions for Class 11 Physics Chapter 6 Work Energy and Power
Case Study Questions for Class 11 Physics Chapter 5 Laws of Motion
Case Study Questions for Class 11 Physics Chapter 5 Laws of Motion Here we are providing case study questions for class 11 physics chapter 5 laws of motion. Students can practice these questions for better understanding of case study type questions. Case Study Questions: Question 1: Conservation of MomentumThis principle is a consequence of Newton’s … Continue reading Case Study Questions for Class 11 Physics Chapter 5 Laws of Motion
MCQ Questions for Class 9 Science Chapter 7 Diversity in Living Organisms
MCQ Questions for Class 9 Science Chapter 7 Diversity in Living Organisms Q.1. Which of the following is the largest phylum?(A) Arthropoda (B) Annelida (C) Mollusca (D) Coelenterate. Check Answer Answer: (A) Q.2. Basic taxonomic category is(A) Population (B) Species (C) Variety (D) Breed Check Answer Answer: (B) Q.3. Amoeba has a contractile vacuole for(A) … Continue reading MCQ Questions for Class 9 Science Chapter 7 Diversity in Living Organisms
Numerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics
Numerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics Here we are providing numerical problems based on topic total internal reflection and critical angle for class 12 physics. Q.1. Calculate the critical angle for glass-air surface, if a ray of light which is incident in air on the glass surface … Continue reading Numerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics
Numerical Problems Based on Refraction of Light for Class 12 Physics
Numerical Problems Based on Refraction of Light for Class 12 Physics Here we are providing numerical problems based on refraction of light for class 12 physics. This covers problems on lateral shift, real and apparent depth. Students can practice these questions for better understanding of the concepts and formulae. Q.1. A ray of light of … Continue reading Numerical Problems Based on Refraction of Light for Class 12 Physics
Numerical Problems Based on Mirror Formula for Class 12 Physics
Numerical Problems Based on Mirror Formula for Class 12 Physics Q.1. A 5 cm long needle is placed 10 cm from a convex mirror of focal length 40 cm. Find the position, nature and size of the image of the needle. What happens to the size of image when the needle is moved farther away … Continue reading Numerical Problems Based on Mirror Formula for Class 12 Physics
Integer Type Questions of Chapter Electrochemistry for JEE Chemistry
Here we are providing integer type questions for class 12 chemistry chapter 3 electrochemistry. These questions are useful for students preparing for various engineering entrance examinations. It is specially prepared for JEE aspirants. Integer Type Questions Based on Chapter Electrochemistry DIRECTIONS. The answer to each of the following questions is a single digit integer, ranging … Continue reading Integer Type Questions of Chapter Electrochemistry for JEE Chemistry
Conceptual Questions Based on Class 12 Physics Electromagnetic Waves
Here we are providing conceptual questions based on class 12 physics chapter 8 electromagnetic waves. These questions are prepared by experts and are very useful from exam point of view. Students can practice these questions for scoring better marks in the exam. Conceptual Questions Based on Class 12 Physics Electromagnetic Waves Q.1. What is displacement … Continue reading Conceptual Questions Based on Class 12 Physics Electromagnetic Waves
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