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Asked/Added Questions From NCERT:


Question 1. Asked on :19 July 2019:07:49:25 PM

 What is called Dispersion of light?

-Added by Himanshi Verma Science » Physics

Answer:

Himanshi Verma

 When a ray of white light is passed through a prism, it gets splitted into its constituent colours. This phenomenon is called phenomenon is called dispersion of light.

-Answered by Himanshi Verma On 19 July 2019:07:50:18 PM


Question 2. Asked on :22 March 2019:04:56:00 PM

 What is Electromagnetic waves?

-Added by Rohit rajput Science » Physics

Answer:

Himanshi Verma

 The waves which do not require medium for their propagation i.e., which can propagate even through the vaccum are called electromagnetic waves.

Light radio waves, X- rays, etc are the examples of electromagnetic waves. These wave propagate with the velocity of light in vaccum.  

-Answered by Himanshi Verma On 23 March 2019:05:49:30 PM


Question 3. Asked on :19 March 2019:05:39:31 PM

 What is LASER? and what is its full form?

-Added by Saraswati Kumari Science » Physics

Answer:

Himanshi Verma

  It is a device that produces an intense, coherent and highly directional beam of the single frequency. It can be transmitted over a great distance without being spread. 

The full form of LASER  is Light Amplification by Stimulated Emission of Radiation.

-Answered by Himanshi Verma On 22 March 2019:04:27:50 PM


Question 4. Asked on :11 February 2019:07:36:29 PM

 Difference between Longitudinal and Transverse waves.

-Added by Nishant Verma Science » Physics

Answer:

Himanshi Verma

Longitudes Waves:- In this wave, the particles of the medium vibrate in the direction of propagation of wave. Waves on spring or sound waves in air are examples of longitudinal waves.                                Transverse waves:- In this wave, the particles of the medium vibrate perpendicular to the direction of propagation of wave. Waves on strings under tension, waves on the surface of water are examples of transverse Waves.

-Answered by Himanshi Verma On 11 February 2019:07:59:17 PM


Question 5. Asked on :27 January 2019:10:34:41 AM

 defind the function of eye lens ?


















-Added by praful kumar Science » Physics

Answer:

Himanshi Verma

 The lens is located in the eye. By changing its shape, the lens changes the focal distance of the eye. In other words, it focuses the light rays that pass through it (and onto the retina) in order to create clear images of objects that are positioned at various distances.

-Answered by Himanshi Verma On 02 February 2019:01:47:42 PM


 

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