light

Question 1

what is light

Answer 1

light is an electromagnetic radiation which causes the sense of vision

Question 2

What is rectilinear propagation of light

Answer 2

The tendency of light to propagate in straight lines

Question 3

What is the reflection of light

Answer 3

The bouncing back all scattering of flight from the surface of an object that is placed in the path

Question 4

Types of reflections

Answer 4

Regular reflection and its regular reflection

Question 5

What is incident ray

Answer 5

The ray that hits the surface of the plane mirror

Question 6

What is reflected ray

Answer 6

The ray that gets reflected of the surface

Question 7

How can we see the reflection of the surrounding in water bodies

Answer 7

The still water is able to reflect light because of the smooth

Question 8

Explain regular reflection

Answer 8

The reflection of light rays from a plane and uniform surface

Question 9

Explain irregular reflection

Answer 9

The reflection of light rays from a rough and nonuniform surface

Question 10

Types of images

Answer 10

Real image and virtual image

Question 11

What is a real image

Answer 11

A real images formed when light rays coming from an object meet each other at a particular point after reflection

Question 12

What is virtual image

Answer 12

A virtual images formed when the light race coming from an object does not appear to meet each other

Question 13

What is lateral inversion

Answer 13

Phenomenon in which the left hand side of an object appears at right hand side of in object in a plane mirror and vice versa

Question 14

What are spherical mirrors

Answer 14

Made with has the shape of a piece cut out of a hollow glassware with one side polished or reflected surface

Question 15

Types of spherical mirror

Answer 15

Concave and convex

Question 16

Concave mirror

Answer 16

If the part of the mirror that curves in word is polished and serve as the reflecting surface then it’s called a concave mirror

Question 17

Convex mirror

Answer 17

If the part of the mirror that curves outwards is polished in serves as the reflecting surface it is called a convex mirror

Question 18

Characteristics of concave mirror

Answer 18

Producers real image
Converges light rays

Question 19

Characteristics of a convex mirror

Answer 19

Producers of virtual image
Light race diverges

Question 20

Uses of plane mirror

Answer 20

Used to make different optical devices such as Periscope in kaleidoscope
Used to see ourselves that various places

Question 21

Uses of convex mirror

Answer 21

Used as rear view mirrors in vehicles to look over the wider area

Used in various places like shop parking lots in order to keep a watch over large areas for security reasons

Question 22

Uses of a concave mirror Mirror

Answer 22

Used as shaving mirrors

Used by dentist to magnify the small parts of the teeth

Used as a reflector in various devices such as torch lights car headlights etc

Question 23

What is a lens

Answer 23

A lens is a transparent medium or substance bounded by two surfaces of which at least one is curved

Question 24

What is the use of lens

Answer 24

Islands is used to bend the light rays as the pass through it, that means the light rays apus to come from a point which is closer or further instead of the actual place of origin

Question 25

Types of lenses

Answer 25

Concave lenses and convex lenses

Question 26

What are concave lenses

Answer 26

A Concave or diverging lens is thin in the middle and thicker at the edges. It diverges the light rays when passed through

Question 27

What kind of image does a concave lens produce

Answer 27

Virtual and upright images