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Answers
Answer:
1-a
2-c
3-b
4-a
5-b
Explanation:
a=360°÷45=8
Solutions :-
1) Two plane mirrors are inclined to each other
Then,
Both the mirror are making angle of 45°
Now,
By using formula to find the number of images formed .
( 360 / N ) - 1
Put the required values in the formula,
(360° / 45° ) - 1
8 - 1
= 7
Hence, The number of images formed are = 7
2) Two plane mirrors are inclined to each other
Then,
Both the mirror are making angle of 60°
Now,
By using formula to find the number of images formed by mirror
( 360 / N ) - 1
Put the required values in the formula,
(360° / 60° ) - 1
= 6 - 1
= 5
Hence, The number of images formed by the mirror = 5
3) Two plane mirrors are inclined to each other
Then,
Both the mirror are making angle of 120°
Now,
By using formula to find the number of images formed by mirror
( 360 / N ) - 1
Put the required values in the formula,
( 360°/ 120° ) - 1
= 3 - 1
= 2
Hence, The number of images formed by the mirror = 2
4) The two adjacent sides of a room we made up of mirrors .
As we know that,
The angles formed by adjacent sides of room is 90°
Now,
By using formula to find the number of images formed by mirror
(360° / N) - 1
(360° / 90° ) - 1
= 4 - 1
= 3
Hence, The number of images formed by the mirror = 3
5) The two adjacent sides of a room we made up of mirrors .
As we know that,
The angles formed by adjacent sides of room is 90°
Now,
By using formula to find the number of images formed by mirror
(360° / N) - 1
(360° / 90° ) - 1
= 4 - 1
= 3
Thus,
The number of images formed by two adjacent sides of mirrors = 3
Now,
We have the floor of the room as a mirror
Therefore,
It only forms the image of the object to the mirror in the floor
Thus,
The number of images formed by floor
= 1