1.Where does light always travel?
A. straight line B. curved line
C. visible line
D. diagonal line
2.In which medium can light travels quickly ?
A. Solids
B. Liquids
C. Air
D. all of the above
3. The bouncing back of light that strikes a clear surface.
A. Refraction
B. Reflection
C. Radiation
D. Retention
4. It is a narrow but powerful beam of light.
A. candle
B. flashlight
C. laser
D. magnifying glass
5. It is the ability of light to bend when it passes a semi- transparent object.
A. Refraction
B. Reflection
C. Radiation
D. Retention​