Fill in the blanks :

(a) Light gives us the sensation of …………… .

(b) The sun is a …………… source of light.

(c) A medium through which light cannot pass is called the …………… .

(d) A medium which allows light to pass through it easily is called the …………… .

(e) Moon is a …………… body.

(f) Light travels in a …………… path.

(g) In a pin hole camera, the image formed is …………… .

(h) The darkest portion of a shadow is called the …………… .

(i) The less dark portion of a shadow is called the …………… .

(j) Lunar eclipse occurs when the …………… comes in between the …………… and the sun.

(a) Light gives us the sensation of vision .

(b) The sun is a natural source of light.

(c) A medium through which light cannot pass is called the opaque medium .

(d) A medium which allows light to pass through it easily is called the transparent medium .

(e) Moon is a non-luminous body.

(f) Light travels in a straight line path.

(g) In a pin hole camera, the image formed is inverted and real .

(h) The darkest portion of a shadow is called the umbra .

(i) The less dark portion of a shadow is called the penumbra .

(j) Lunar eclipse occurs when the earth comes in between the moon and the sun.