Asked/Added Questions From NCERT:

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

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

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

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

 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

  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

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

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

 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

 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

1. Gradual weakening of ciliary muscle.

2. Diminishing flexibility of eye lens.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

 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]

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

 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

 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

 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

 A female given name, a variant of Corinna.

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

 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

 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

 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

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

 A 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

 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

 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

 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

 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

 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

 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