मराठी

Which Property of Light Makes a Pencil Cast a Shadow When It is Held in Front of a Light Source?

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प्रश्न

Which property of light makes a pencil cast a shadow when it is held in front of a light source?

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उत्तर

One property of light that makes a pencil cast a shadow when it is held in front of it is that light travels in a straight line.

 
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पाठ 1: Reflection of Light - Exercise 1 [पृष्ठ २१]

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लखमीर सिंह Physics Part 1 [English] Class 10
पाठ 1 Reflection of Light
Exercise 1 | Q 10. | पृष्ठ २१

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

What is lateral inversion? Explain by giving a suitable example.


Define the following terms used in the study of reflection of light by drawing a labelled ray-diagram:

  1. Incident ray
  2. Point of incidence
  3. Normal
  4. Reflected ray
  5. Angle of incidence
  6. Angle of reflection

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

(a) always
(b) sometimes
(c) under special conditions
(d) never


The figure given alongside shows the image of a clock as seen in a plane mirror. The correct time is:


A man sits in an optician's chair looking into  plane mirror which is 2 m away from him and views the image of a chart which faces the mirror and is 50 cm behind his head. How far away from his eyes does the chart appear to be?

 


A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:

(a) 0°
(b) 45°
(c) 90°
(d) 120°


When a ray of light travels from air to glass, it bends .......... the normal.


The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.


Right or wrong sentence.

The incident rays and refracted rays are on opposite sides of the column.


The speed of light varies in different media.


Observe the given figure and name the following.

Ray AB  
Ray NM  
Ray MD  
∠ r  

State whether true or false. If false, correct the statement.

The angle of deviation depends on the refractive index of the glass.


If a beam of red light and a beam of violet light are incident at the same angle on the inclined surface of a prism from air medium and produce angles of refraction r and v respectively, which of the following is correct?


A ray of light traveling in medium 1 strikes and travels into another transparent medium 2. If the speed of light is greater in medium 1, the ray will ______.


The bottom of swimming pool appears to be less deep than the actual one because of


A normal is an imaginary line drawn ________ to the boundary at the point of incidence.


Which of the following relations is called Snell's Law?


A medium with a higher refractive index is:


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