which one travels faster?

• sound

• light

which one is converging light rays?

solar eclipse

• sun moves between the moon and earth

• earth moves between the sun and the moon

• moon moves between the sun and the earth

umbra region

• region where partial shadow is experienced.

• region where there is a total shadow.

the reflection of light

• the reflection of light is the bouncing of light off a surface.

• the reflection of light is the bending of light as it travels from one medium to another

which one is concave mirror?