Wellcome!

Question 1. Asked on :31 January 2020:07:09:17 PM

#### What is refractive Index?

-Added by Himanshi Verma Science » Light

priyanshu kumar
The ratio of the velocity of light in a vaccum to its velocity in a specified medium. This is called Refractive Index.

-Answered by priyanshu kumar On 17 February 2020:02:53:48 PM

Question 2. Asked on :31 January 2020:06:31:45 PM

#### What is reflection of light?

-Added by Himanshi Verma Science » Light

priyanshu kumar
Bouncing back of light from highly polished surface like mirror is called relection of light.

-Answered by priyanshu kumar On 17 February 2020:02:53:57 PM

Question 3. Asked on :27 December 2019:07:10:10 PM

#### how many laws are having for reflection?

-Added by Aman Senapati Science » Light

Rohit Rajput

There are two laws of refection:-

1st law of reflection

The angle of incidence is equal to the angle of reflection or l_i=l_r.

2nd law of reflection

The incident ray, the normal at the point of incidence and the reflected ray lie on the same plane.

-Answered by Rohit Rajput On 29 December 2019:10:16:38 AM

Question 4. Asked on :31 October 2019:08:00:27 PM

#### What is the Tyndall effect?

-Added by Himanshi Verma Science » Light

priyanshu kumar

When light passes through a colloid its path become visible is called tyndall effect.

-Answered by priyanshu kumar On 01 November 2019:10:01:52 AM

Question 5. Asked on :31 October 2019:07:54:14 PM

#### What is referred as white light?

-Added by Himanshi Verma Science » Light

priyanshu kumar

Any light that forms a spectrum similar to that  of sunlight is referred as white light.

-Answered by priyanshu kumar On 01 November 2019:10:02:05 AM

Question 6. Asked on :31 October 2019:07:50:03 PM

#### Why spectrum is formed when light is passed through a glass prism?

-Added by Himanshi Verma Science » Light

Suraj Kumar

Each colour has a definite wavelength the angle of deviation differs. Red is the least deviated and violet is the most deviated colour so different clours deviate at different angles to form spectrum.

-Answered by Suraj Kumar On 01 November 2019:10:58:24 AM

Question 7. Asked on :31 October 2019:07:45:40 PM

#### What is Acronym?

-Added by Himanshi Verma Science » Light

priyanshu kumar

It is a group of alphabets that represent sequential colours in spectrum.

-Answered by priyanshu kumar On 01 November 2019:10:02:33 AM

Question 8. Asked on :31 October 2019:07:43:44 PM

#### What is Spectrum?

-Added by Himanshi Verma Science » Light

Suraj Kumar

The band of seven colours formed due to dispersion of light is called spectrum.

-Answered by Suraj Kumar On 01 November 2019:10:58:50 AM

Question 9. Asked on :31 October 2019:07:39:35 PM

#### What are the advantages of the eyes in front of the face?

-Added by Himanshi Verma Science » Light

priyanshu kumar

1. It gives a wider field of view.

2. It enhances the ability to detect faint objects.

3. It provides three dimensional view.

-Answered by priyanshu kumar On 01 November 2019:10:03:04 AM

Question 10. Asked on :31 October 2019:07:15:23 PM

#### Write the causes of Myopia?

-Added by Himanshi Verma Science » Light

Suraj Kumar

1. Gradual weakening of ciliary muscle.

2. Diminishing flexibility of eye lens.

-Answered by Suraj Kumar On 01 November 2019:10:59:12 AM

Question 11. Asked on :10 October 2019:07:50:06 PM

#### What is characterstics plane mirror?

-Added by Aarohi Chauhan Science » LIGHT

priyanshu kumar
In conclusion, plane mirrors produce images with a number of distinguishable characteristics. Images formed by plane mirrors are virtual, upright, left-right reversed, the same distance from the mirror as the object's distance, and the same size as the object.

-Answered by priyanshu kumar On 12 October 2019:04:00:04 PM

Question 12. Asked on :10 September 2019:10:15:29 AM

#### When does concave mirror form a virtual image?

-Added by Himanshi Verma Science » Light

priyanshu kumar
Concave mirror will form a virtual image when the object between pole and the focus.

-Answered by priyanshu kumar On 03 October 2019:01:29:36 PM

Question 13. Asked on :10 September 2019:10:07:04 AM

#### What are the conditions for observing a rainbow?

-Added by Himanshi Verma Science » Light

Akki chauhan

1. The sun should shine brightly after rainfall.

2. Sun should be at the back of the observer.

-Answered by Akki chauhan On 11 September 2019:11:36:12 AM

Question 14. Asked on :25 August 2019:08:53:17 AM

#### Write the function of iris?

-Added by Prince Rawat Science » Light

Shivang Gupta
The sidze of Pupil is controlled by irs.

-Answered by Shivang Gupta On 25 August 2019:02:48:27 PM

Question 15. Asked on :25 August 2019:08:50:56 AM

#### What is iris?

-Added by Prince Rawat Science » Light

Shivang Gupta
Behind cornea we found dark structure is called iris.

-Answered by Shivang Gupta On 25 August 2019:02:48:40 PM

Question 16. Asked on :25 August 2019:08:45:58 AM

#### what is retina?

-Added by Prince Rawat Science » Light

Shivang Gupta
The lens focuses light on the back of the eyes on a layer is retina.

-Answered by Shivang Gupta On 25 August 2019:02:48:54 PM

Question 17. Asked on :25 August 2019:08:42:43 AM

#### What is cornia?

-Added by Prince Rawat Science » Light

Shivang Gupta
The cornea is your eye'clear,protective owner layer. Along with the sclera(the Whit's of your eye),it serves as a barrier against dirt,germs and other thing that can cause damage.  If your cornea is damaged by disease.

-Answered by Shivang Gupta On 25 August 2019:02:49:04 PM

Question 18. Asked on :25 August 2019:08:40:40 AM

#### Write the function of retina.

-Added by Prince Rawat Science » Light

Shivang Gupta
Image are formed on retina.

-Answered by Shivang Gupta On 25 August 2019:02:49:13 PM

Question 19. Asked on :25 August 2019:08:38:47 AM

#### What is the colour of Sunlight?

-Added by Prince Rawat Science » Light

Shivang Gupta
The colour of sunlight is white.

-Answered by Shivang Gupta On 25 August 2019:02:49:22 PM

Question 20. Asked on :25 August 2019:08:34:16 AM

#### Name natural phenomenon to show the splitting of light.

-Added by Prince Rawat Science » Light

Shivang Gupta
Formation  of rainbow.

-Answered by Shivang Gupta On 25 August 2019:02:49:30 PM

Question 21. Asked on :25 August 2019:08:32:14 AM

#### How does white sunlight look while passing through prism?

-Added by Prince Rawat Science » Light

Shivang Gupta
It looks like seven colour of rainbow.

-Answered by Shivang Gupta On 25 August 2019:02:49:48 PM

Question 22. Asked on :25 August 2019:08:30:02 AM

#### What is Dispersion of light?

-Added by Prince Rawat Science » Light

Shivang Gupta
Splitting of light into its colours is knows as dispersion of light.

-Answered by Shivang Gupta On 25 August 2019:02:49:59 PM

Question 23. Asked on :25 August 2019:08:28:27 AM

#### What is reflected ray?

-Added by Prince Rawat Science » Light

Shivang Gupta
The ray that comes back from the surface after reflection is knows as the reflected ra

-Answered by Shivang Gupta On 25 August 2019:02:50:43 PM

Question 24. Asked on :25 August 2019:08:26:50 AM

#### What is regular reflection?

-Added by Prince Rawat Science » Light

Shivang Gupta
Reflection from a smooth surface like that of a mirror is called regular reflection.

-Answered by Shivang Gupta On 25 August 2019:02:51:10 PM

Question 25. Asked on :25 August 2019:08:26:11 AM

#### Write the law of reflection.

-Added by Prince Rawat Science » Light

Shivang Gupta

The law of  reflection states that the incident ray, the reflected ray, And the normal to the surface of the same plane.

Furthermore, the angle of reflection is equal to the angle of incidence. Both the angles are measured with respect to the normal to the mirror.

-Answered by Shivang Gupta On 25 August 2019:02:51:23 PM

Question 26. Asked on :25 August 2019:08:23:38 AM

#### What is incident ray?

-Added by Prince Rawat Science » Light

Shivang Gupta
The light ray, which strikes any surface, is called the incident.

-Answered by Shivang Gupta On 25 August 2019:02:51:39 PM

Question 27. Asked on :25 April 2019:09:39:31 PM

#### Write the law of reelection?

-Added by Nitish kumar Science » Light

Sohail alam

Election law is a discipline falling at the juncture of constitutional law and political science. It researches "the politics of law and the law of politics". The conceptual knowledge behind election law focuses on who votes, when that person can vote, and the construction behind the tabulated totals.[1]

## Contents

-Answered by Sohail alam On 26 April 2019:08:01:10 AM

Question 28. Asked on :25 April 2019:09:37:40 PM

#### What is reflected rays?

-Added by Nitish kumar Science » Light

priyanshu kumar

An incident ray is a ray of light that strikes a surface. ... The reflected ray corresponding to a given incident ray, is the ray that represents the lightreflected by the surface. The angle between the surface normal and the reflected ray is known as the angle of reflection.

-Answered by priyanshu kumar On 26 April 2019:09:02:27 AM

Question 29. Asked on :25 April 2019:09:35:53 PM

#### What is incident rays?

-Added by Nitish kumar Science » Light

priyanshu kumar

An incident ray is a ray of light that strikes a surface. The angle between this ray and the perpendicular or normal to the surface is the angle of incidence.An incident ray is a ray of light that strikes a surface. The angle between this ray and the perpendicular or normal to the surface is the angle of incidence.

-Answered by priyanshu kumar On 26 April 2019:08:54:16 AM

Question 30. Asked on :25 April 2019:09:34:06 PM

#### What are iris ?Write the function of iris?

-Added by Nitish kumar Science » Light

Sohail alam

The function of iris is to control the diameter and size of the pupil and the functionof pupil is to control the amount of light that enters the eye. The primary function of the human pupil is to regulate the amount of light that enters the eye.

-Answered by Sohail alam On 26 April 2019:08:56:45 AM

Question 31. Asked on :25 April 2019:09:32:50 PM

#### What is Corina?

-Added by Nitish kumar Science » Light

priyanshu kumar

A female given name, a variant of Corinna.

-Answered by priyanshu kumar On 26 April 2019:08:55:16 AM

Question 32. Asked on :17 April 2019:08:58:35 AM

#### Define plane.

-Added by Rohit Rajput Science » Light

Himanshi Verma

A flat surface on which a straight line joining any two points on it would wholly lie.

-Answered by Himanshi Verma On 21 April 2019:10:50:28 AM

Question 33. Asked on :17 April 2019:08:57:12 AM

#### How many image, does one mirror from?

-Added by Rohit Rajput Science » Light

Himanshi Verma

Infinite images are formed by two parallel mirrors. But not many are seen as the light gets a little absorbed every time it reached and strikes the mirror.

-Answered by Himanshi Verma On 21 April 2019:10:51:18 AM

Question 34. Asked on :17 April 2019:08:55:55 AM

#### What is virtual image?

-Added by Rohit Rajput Science » Light

Himanshi Verma

An optical image formed from the apparent divergence of light rays from a point, as opposed to an image formed from their actual divergence.

-Answered by Himanshi Verma On 21 April 2019:10:52:13 AM

Question 35. Asked on :17 April 2019:08:53:00 AM

#### Define incident ray.

-Added by Rohit Rajput Science » Light

Himanshi Verma
An incident ray is a ray of light that strikes a surface. The angle between this ray and the perpendicular or normal to the surface is the angle ofincidence.

-Answered by Himanshi Verma On 21 April 2019:10:53:01 AM

Question 36. Asked on :31 January 2019:10:17:28 AM

#### What is concave mirror

-Added by praful kumar Science » Light

Himanshi Verma

concave mirror, or converging mirror, has a reflecting surface that bulges inward (away from the incident light). Concave mirrors reflect light inward to one focal point.They are used to focus light. Unlike convex mirrors, concave mirrors show different image types depending on the distance between the object and the mirror

-Answered by Himanshi Verma On 02 February 2019:01:23:17 PM

Question 37. Asked on :31 January 2019:10:11:31 AM

#### What is convex mirror.

-Added by praful kumar Science » Light

Himanshi Verma

If the reflecting surface of a spherical mirror is called a con cave mirror

-Answered by Himanshi Verma On 02 February 2019:01:22:55 PM

Question 38. Asked on :31 January 2019:09:56:28 AM

#### What is virtual image.

-Added by praful kumar Science » Light

Himanshi Verma

The image formed by a place mirror could  not obtained on a screen such as image is    called avirtual image

-Answered by Himanshi Verma On 02 February 2019:01:31:56 PM

Question 39. Asked on :29 January 2019:10:31:40 AM

#### Ozone acts as a natural shield against ultraviolet radiation explane.

-Added by Nitish kumar Science » Light

Himanshi Verma

The ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation  [UVR] from the sun, protecting life on Earth from its potentially harmful effects. ... That is,the lower the ozone levels, the higher the solar  [UVR.]

-Answered by Himanshi Verma On 02 February 2019:01:33:23 PM

Question 40. Asked on :28 January 2019:05:13:32 PM

#### What is the PRISM ?

-Added by Nitish kumar Science » Light

Himanshi Verma

A transparent material with three rectangular surfaces used for obtaining spectrum of light

-Answered by Himanshi Verma On 02 February 2019:01:33:40 PM

Question 41. Asked on :28 January 2019:04:42:18 PM

#### State the characteristics of the image formed by a plain mirror .

-Added by Nitish kumar Science » Light

Himanshi Verma

The image formed by a concave lens is always virtual, upright and erect. Question 4: State the characteristics of the image formed by a plane mirror. Answer: The image formed by a plane mirror is erect, laterally inverted, and of the same size as that of the object.

-Answered by Himanshi Verma On 02 February 2019:01:36:08 PM

Question 42. Asked on :28 January 2019:04:38:26 PM

#### State the differences between a convex and a concave lens .

-Added by Nitish kumar Science » Light

Himanshi Verma

Convex lens: Thick at middle thin at edges. Can form real image.

Concave lens: Thin at middle thick at edges. Can form virtual image

-Answered by Himanshi Verma On 02 February 2019:01:37:24 PM

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