Question

B. Fill in the blanks.
objects can produce light of their own
2. The speed of light is about
in vacuum or air
3. Objects that allow light to pass through them partially are known as
4. A very fine path of light is called a
s. Light travels in
6. When an opaque object is placed in the path of light, it forms a
7. A
object does not cast a shadow.​

Answer 1

1. luminous objects.

2. 3 × 10^8 Km/ sec

3. Translucent objects

4. ray

6. shadow

7. Transparent objects

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