OPTICS (Properties of Light)

Question 1

what is optics?

Answer 1

is a branch of physics that deals with the determination of behavior and the properties of light, along with its interactions with the matter and also with the instruments which are used to detect it.

Question 2

is also called geometrical optics. It is a branch of science that describes light propagation in terms of “rays”.

Answer 2

ray optics

Question 3

2 parts of optics

Answer 3

• Geometrical Optics (Ray Optics)
• Physical Optics (Wave Optics)

Question 4

IS A FORM OF ENERGY THAT CAUSES THE SENSATION OF VISION. DIFFERENT THEORIES ON THE NATURE OF LIGHT WERE PROPOSED ON
THE BASIS OF THE FACT THAT ENERGY CAN BE TRANSFERRED FROM ONE POINT TO ANOTHER, EITHER BY PARTICLE MOTION OR BY WAVE
MOTION.

Answer 4

Light

Question 5

How does light travel?

Answer 5

• in a straight line
• travels in a speed of 3 x 10^8 M/S`

Question 6

is the phenomenon in which light travelling in one medium, incident on the surface of another returns to the first medium

Answer 6

Reflection

Question 7

The angle of incidence is equal to the angle of reflection.

Answer 7

yes opo

Question 8

is a phenomenon in which there is a change in the speed of light as it travels from one
medium to another and there is a bending of the ray of light.

Answer 8

Refraction

Question 9

what are the properties of light?

Answer 9

• reflection of light
• refraction of light
• dispersion of light
• diffraction of light
• polarisation of flight
• interference of light

Question 10

What are the types of mirror?

Answer 10

Plane mirror
Spherical mirror/Curve mirror
* concave
* convex

Question 11

The images formed from a ________ mirror are the reflected images in their normal proportions but reversed from left to right. These are the most widely used mirrors.

Answer 11

Plane mirror

Question 12

These are the spherical mirrors that are curved outward and the image obtained is
virtual, diminished and erect for a real object

Answer 12

convex mirror

Question 13

These are the spherical mirrors that are curved inward and the image obtained from
these mirrors depends on the placement of the object.

Answer 13

concave mirror

Question 14

it is a branch of optics in which be studied the propagation of light in terms of rays.

Answer 14

geometrical optics (ray optics)

Question 15

In this branch of optics, light is
considered a wave. Here the light behaves and interacts with objects in a waveform that have wavelengths nearly closer or smaller than the wavelength of light.

Answer 15

physical optics (wave optics)

Question 16

The splitting of a ray of white light into its constituent colours

Answer 16

dispersion

Question 17

The phenomenon of bending of light around corners of small obstacles and hence it’s encroachment into the region of the geometrical shadow

Answer 17

diffraction

Question 18

Normal light vibrates in all directions perpendicular to the propagation of light.

Answer 18

polarisation

Question 19

is the phenomenon of modification in the intensity of light due to redistribution of light energy in the region of superposition of two or more light waves.

Answer 19

interference