# WHAT IS lens power?

The power of a lens is defined as the reciprocal of its focal length. It is represented by the letter P. The power P of a lens of focal length f (in m) is given by. P=1f. The SI unit of power of a lens is ‘dioptre’.

## What is the name of Chapter 10 science class 10?

NCERT Solutions for Class 10 Science Chapter 10: Light Reflection and Refraction.

## What is light in Physics for Class 10?

Light is electromagnetic radiation which shows both the properties of waves and particles. It is the form of energy and also keeps the Earth warm. It exists in the form of tiny energy packets known as photons. Each wave consists of the wavelength or the frequency.

## What is refraction of light Class 10 answer?

Refraction is the phenomenon of bending of light as it goes obliquely from one medium to another. It is caused by the change in speed of light as it goes from one medium to another.

## What is V in light chapter Class 10?

(v) laterally inverted. Absolute refractive index(n) of a medium is the ratio of speed of light in vacuum or air(c) to the speed of light in the medium(v) i.e. Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

## How many chapters are there in class 10 science?

How many chapters are there in class 10 science NCERT Books? A. NCERT Science textbook for Class 10, consists of a total of 16 Chapters as per the latest syllabus prescribed by the CBSE.

## What is mirror formula class 10th?

Hence, the equation of mirror formula is 1f=1v+1u. Note:The reflecting part of the concave spherical mirror is that which caves inwards and the reflecting part of convex spherical mirror is one which caves outwards. In convex mirror focal length f is positive and object distance u is taken as negative.

## What is the energy of light?

Light energy is a kind of kinetic energy with the ability to make types of light visible to human eyes. Light is defined as a form of electromagnetic radiation emitted by hot objects like lasers, bulbs, and the sun. Light contains photons which are minute packets of energy.

## What is a ray of light?

The light traveling in any one direction in a straight line is called a ray of light. A group of light rays given out from a source is called a beam of light.

## What is mirror formula?

The relation between focal length of mirror, distance of the object and distance of the image is known as mirror formula. It is given by. u1+v1=f1.

## WHAT IS lens formula?

The Lens formula is applicable for convex as well as concave lenses. These lenses have negligible thickness. The formula is as follows: 1 v − 1 u = 1 f.

## What is the formula of power Class 10?

The electric power is given by P = VI, where V is the potential difference, I is the electric current and P is the electric power.

## What is V in n/c v?

When scientists talk about refraction, they use a formula. “n = c / v” “c” is the speed of light in a vacuum, “v” is the speed of light in that substance and “n” is the index of refraction.

## What is the formula of magnification?

Let’s explore the magnification formula (M= v/u) for lenses and see how to find the image height and its nature (whether it’s real or virtual). Created by Mahesh Shenoy.

## Which chapters of Class 10 is chemistry?

• Stereochemistry.
• Organic Compounds.
• Quantum Numbers.
• Atomic Mass of Elements.
• Periodic Properties of Elements.
• 118 Elements and Their Symbols.
• Balancing Chemical Equations.
• Salt Analysis.

## What are the chapters in class 10 science physics?

• CHAPTER 10: Light-Reflection and Refraction.
• CHAPTER 11:The Human Eye And The Colourful World.
• CHAPTER 12:Electricity.
• CHAPTER 13: Magnetic Effects Of Electric Current.
• CHAPTER 14: Sources Of Energy.
• CHAPTER 15: Our Environment.
• CHAPTER 16: Management of Natural Resources.
• Why refer to these articles?

## Which chapters of Class 10 is biology?

• Chapter-6 Life Process.
• Chapter-7 Control and Coordination.
• Chapter-8 How do Organisms Reproduce?
• Chapter-9 Heredity and Evolution.
• Chapter-15 Our Environment.
• Chapter-16 Management of Natural Resources.

## How many chapters are in chemistry?

How many chapters are there in class 12 Chemistry NCERT Book? A. NCERT Chemistry textbook for Class 12, consists of a total of 16 chapters as per the latest syllabus prescribed by CBSE.

## How many chapters are in 10th maths?

NCERT Class 10 maths contain a total of 15 chapters and all the chapters are important to study. It is necessary to solve all the exercises including the additional exercises to get a good score.

## What is V in lens formula?

where u is the distance of the object from the lens; v is the distance of the image from the lens and f is the focal length, i.e., the distance of the focus from the lens. N.B. other sign conventions are sometimes used in the literature. = 2 6 − 1 6 = 1 6 So v = 6 cm.

## What is object distance?

object distance in American English noun. Photography. the distance between the lens of a camera and an object being photographed.

## What is Vu and f?

The distance between the object and the pole of the mirror is called Object distance(u). The distance between the image and the pole of the mirror is called Image distance(v). The distance between the Principal focus and the pole of the mirror is called Focal Length(f).

## What is light formula?

Formula: c = f where: c = the speed of light = 300,000 km/s or 3.0 x 108 m/s. = the wavelength of light, usually measured in meters or Ångströms (1 Å = 10-10 m) f = the frequency at which light waves pass by, measured in units of per seconds (1/s).

## What is Ke formula?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

## What is energy made of?

Energy is not made of anything, energy is a term used to describe a trait of matter and non-matter fields. When matter has velocity, for example, it is said to have kinetic energy. There are also various forms of potential energy.