Unit 12 Light

a. Objects that give off their own light is called __________

• non luminous

• Opaque

• luminous

a. Objects that do not give off their own light is called __________

• opaque

• non luminous

• luminous

c -Moon is an example of the ________________ objects.

• non luminous

• None of them

• luminous

d-Speed of light is _______________ than speed of sound.

• none of them

• faster

• slower

e - Wood is an example of the ________________ objects.

• luminous

• non luminous

• opaque

a. Moon light is really the light of sun reflected by the moon.

• True

• False

b. Sun is a non-luminous body.

• True

• False

c. The reflected light tells us shape, size and colour of the object.

• True

• False

d. Moon is a luminous body.

• True

• False

e. Polished metals can also act as mirror.

• True

• False