1. Refraction occurs when light changes speed while passing through different mediums.
2. A prism separates white light into its constituent colors through dispersion.
3. In a concave mirror, the image formed is always virtual.
4. A glass slab does not change the direction of a light ray.
5. The focal length of a convex mirror is always positive.
6. The angle of incidence is always equal to the angle of refraction.
7. Convex mirrors are used in rear-view mirrors of vehicles.
8. Dispersion of light happens only in prisms.
9. The image formed by a plane mirror is always upright and virtual.
10. The bending of light when it enters a different medium is called reflection.
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