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  4. SSC Worksheet for Chapter - 4 Reflection of Light Class 8

SSC Worksheet for Chapter - 4 Reflection of Light Class 8

Worksheets For class 8

Find SSC Worksheet for chapter-4 Reflection of Light class 8

CLASS-8

BOARD: SSC

Physics Worksheet -4

TOPIC: Reflection of Light

For other SCC Worksheet for class 8 Science check out main page of Physics Wallah.

Fill in the blanks:

  1. The image formed in a plane mirror is ___________ as compared to the size of object.
  2. Image formed in water is of the same size as the object because surface of still water acts like a ___________.
  3. Surface of a glass is made ___________ when making a mirror so that the mirror reflects practically all the light incident on it.
  4. The phenomenon of right and left sides of the image inter changing in a plane mirror is called ___________.
  5. ___________ number of images is obtained in 2 parallel mirrors.
  6. Laws of reflection are ___________ even in case of irregular reflection.
  7. Rays in a parallel beam of incident light do not remain parallel to each other after reflection from a rough surface because of ___________ reflection.

Answer in Brief:

  1. What are the characteristics of image formed by plane mirror ?
  2. Explain the difference between regular and irregular reflection.
  3. Draw a net labeled diagram to illustrate working of a periscope. Also, describe the role of the 2 mirrors in the periscope.
  4. State the laws of reflection.

Solutions: to worksheet-4 Topic- Reflection of Light

Fill in the blanks

  1. of the same size
  2. Plane mirror
  3. Shining
  4. Lateral inversion
  5. Infinite
  6. Followed
  7. Irregular
    1. virtual ("behind" the mirror)
    2. erect (never inverted)
    3. the same size as the object (not magnified)
    4. the same distance behind the mirror as the object is in front
  9.  
Regular Reflection Irregular Reflection
  1. Regular reflection takes place when a ray of light
    is incident on a polished smooth surface like a mirror.
  2. Reflected ray of light moves only in a fixed
    direction.
    Reflection of Light
  1. Irregular reflection takes place when a ray of is
    incident on a wall or wood which is not smooth or
    polished.
  2. Reflected light moves in different direction.
    Reflection of Light

10. Periscope uses two mirrors at 45 degree angles to the direction one desires to see. The light reflected from one to the other and then  out to the persons eye. Their role is to reflect light at right angles.
Reflection of Light

11.

  1. The angle of incidence is equal to the angle of reflection.
  2. The reflected ray, the incident ray and the normal at the point of incidence lie on the same plane.

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