Light- Reflection and Refraction-Sample Questions

1.   List four characteristics of the images formed by plane mirrors. (CBSE 2015)

2.   Draw a ray diagram to show the path of the reflected ray corresponding to an incident ray which is directed parallel to the principal axis of a convex mirror. Mark on it the angle of incident and the angle of reflection (CBSE 2014)

3.   A spherical mirror produces an image of magnification -1 on a screen placed at a distance of 50 cm from the mirror.

         (a) Write the type of mirror.

         (b) Find the distance of the image from the object.

         (c) What is the focal length of the mirror?

         (d) Draw the ray diagram to show the image formation in this case. (CBSE 2014)

4.   State the laws of refraction of light. If the speed of light in vacuum is 3X108 ms-1, find the speed of light in a medium of absolute refractive index 1.5. (CBSE 2014)

5.   Which phenomenon is responsible for making the path of light visible? (CBSE 2012)

6.   When we place a glass prism in the path of a narrow beam of white light a spectrum is obtained.

7.   What happens when a second identical prism is placed in an inverted position with respect to the first prism? Draw a labeled ray diagram to illustrate it. ( CBSE 2012)

8.   The power of the lens is -4.0D. What is the nature of this lens? (CBSE 2008)

9.   Which type of mirror is used to give erect and enlarged image of an object? (CBSE 2008)

10.   Draw the ray diagram and also state the position, the relative size and the nature of image formed by a concave mirror when the object is placed at the centre of curvature of the mirror. (CBSE 2011)