MCQ Class 10 Science Chapter 9 Light-Reflection and Refraction

1.  is the lateral inversion of

2. A student obtained a sharp image of the grills of a window on a screen using a concave mirror. His teacher remarked that for getting better results a well lit distance object (preferably the sun) should be focussed on the screen. What should be done for this purpose?

3. Power of a lens is

4. After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below:
The correct observations are:

5. The refractive index is

7. If a, b, c and d represent object distance, image distance, focal length and radius of curvature in case of a spherical mirror, then:

8. The maximum image distance in case of a concave lens of focal length 'f' is :

9. If the image formed by a concave mirror is observed to be virtual, erect and larger than the object then the position of the object will be

10. SI unit of power of lens is