If light strikes a plane mirror at an angle of 30 to the perpendicular, the angle at which the light is reflected from the perpendicular is
A. 30.
B. 60.
C. 90.
D. 120.
2006-10-20 19:47:40 · 10 answers · asked by Rola 1 in Science & Mathematics ➔ Physics
30; reflection means angle of incidence ray = angles of existing.
2006-10-20 19:49:22 · answer #1 · answered by smart son of a bich 2 · 0⤊ 0⤋
Answer:
30 degrees
Explanation
According to the 1st law of reflection, The angle made by an incident ray to the normal (perpendiacular) is equal to the angle of reflection made by it to the perpendiacular
2006-10-21 02:52:04 · answer #2 · answered by vishal_willpower 2 · 0⤊ 0⤋
It would be 30. The angle of incidence is equal to the angle of reflection.
2006-10-21 02:55:46 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Always the same angle it hits at.
120 would be a good trick, since it would have to come out of the back of the mirror.
2006-10-21 16:42:25 · answer #4 · answered by Nomadd 7 · 0⤊ 0⤋
I'm guessing 30 degrees.
I Cr 13;8a
10-21-6
2006-10-21 03:14:59 · answer #5 · answered by ? 7 · 0⤊ 0⤋
3o degrees as the angle of inciodence is equal to the angle of reflection..!!
2006-10-21 03:06:09 · answer #6 · answered by nijas . 1 · 0⤊ 0⤋
My pick would be 90 degrees. Try the experiment and know for sure.
2006-10-21 02:53:34 · answer #7 · answered by Anonymous · 0⤊ 0⤋
your wording of quest is ambigous.but i think 30 degree is correct
2006-10-21 02:59:10 · answer #8 · answered by Fawad 1 · 0⤊ 0⤋
smart son (what's in a name?) is right. "existing" sounds like the wrong word to me, (though english is not my native language), I think you get what he means. Vishan (of course) is right too.
2006-10-21 03:02:12 · answer #9 · answered by icqanne 7 · 0⤊ 0⤋
According to what you said I would say b
2006-10-21 02:51:24 · answer #10 · answered by o7buster 3 · 0⤊ 0⤋