Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 4: Problem 33

Distinguish between luminous and non-luminous bodies.

Short Answer

Expert verified
Answer: The main differences between luminous and non-luminous bodies are that luminous bodies emit their own light due to internal processes like nuclear or chemical reactions, and they are often associated with high temperatures. Non-luminous bodies do not produce their own light and rely on external light sources to be visible. Their visibility depends on the quality and intensity of the light they reflect. Examples of luminous bodies include the Sun, stars, and fireflies, while examples of non-luminous bodies are the Moon, planets, and everyday objects like trees and buildings when illuminated by an external light source.

Step by step solution

01

Define Luminous Bodies

Luminous bodies are objects that emit their own light, either through nuclear reactions, chemical reactions, or other processes. The light is produced due to the energy conversion within the object.
02

Define Non-Luminous Bodies

Non-luminous bodies are objects that do not emit their own light. Instead, they are visible because they reflect light from other sources, such as luminous bodies or other light sources. These objects don't have the ability to generate their own light.
03

Describe Characteristics of Luminous Bodies

Some of the key characteristics of luminous bodies include: 1. They produce light due to internal processes, such as nuclear or chemical reactions. 2. They are often associated with high temperatures, as the energy conversion process usually generates heat. 3. They can be visible at great distances since they emit light.
04

Describe Characteristics of Non-Luminous Bodies

Some of the key characteristics of non-luminous bodies include: 1. They do not produce their own light, so they are dependent on external light sources to be visible. 2. They are not necessarily associated with high temperatures, as they don't emit light due to internal processes. 3. Their visibility depends on the quality and intensity of the light they reflect.
05

Provide Examples of Luminous Bodies

Examples of luminous bodies include: 1. The Sun: A star that generates light and heat through nuclear fusion. 2. Stars: Similar to the Sun, stars emit light and heat as a result of nuclear reactions. 3. Fireflies: These insects emit light through a chemical reaction called bioluminescence.
06

Provide Examples of Non-Luminous Bodies

Examples of non-luminous bodies include: 1. The Moon: It appears bright in the sky because it reflects sunlight. 2. Planets in our solar system (e.g., Earth): These celestial bodies reflect light from the Sun, making them visible. 3. Objects around us: Things like trees, buildings, and other everyday objects are non-luminous as they don't emit their own light but become visible when illuminated by an external light source.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

What are cold and hot sources of light? Give examples for each.

Glow-worm is a _______ source of light.

Write the following steps in sequential order to verify the laws of reflection. (a) Draw a normal at the point where the two lines \(\mathrm{PQ}\) and \(\mathrm{P}_{1} \mathrm{Q}_{1}\) meet. (b) Remove the pins and the mirror and join \(\mathrm{P}, \mathrm{Q}\) similarly join \(\mathrm{P}_{1}, \mathrm{Q}_{1}\). (c) View the image of \(\mathrm{P}\) and \(\mathrm{Q}\) and fix two more pins \(\mathrm{P}_{1}\) and \(\mathrm{Q}_{1}\) such that the images of pins \(\mathrm{P}, \mathrm{Q}\) and \(\mathrm{P}_{1}, \mathrm{Q}_{1}\) are along the same line. (d) Draw a straight line on a white paper spread on the table and fix a plane mirror on the line. (e) Fix two pins \(\mathrm{P}\) and \(\mathrm{Q}\) in front of the mirror. (f) Measure the angle of incidence and angle of reflection and compare them to verify the law reflection. (1) dabecf (2) acdbfe (3) decbaf (4) dbacef

. Which of the following is (are) converging mirror(s)? (1) Convex mirror (2) Concave mirror (3) Plane mirror (4) Both (1) and (2)

The direction of light can be changed by ________. (1) a plane mirror (2) a piece of paper (3) a stone (4) All the above.
See all solutions

Recommended explanations on Physics Textbooks

Physical Quantities And Units

Read Explanation

Nuclear Physics

Read Explanation

Electricity

Read Explanation

Space Physics

Read Explanation

Linear Momentum

Read Explanation

Astrophysics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free