1.

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.

Answer»

(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.



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