| Author |
Message |
![[Post New]](/templates/default/images/icon_minipost_new.gif) 11 Oct 2008 17:22:09 IST
|
|
|
if the incident ray makes an angle 30 degrees with the normal (in a plane mirror), what will be the angle between the incident ray and the reflected ray?
|
|
|
|
11 Oct 2008 17:53:28 IST
|
|
|
The laws of reflection state that the angle made by the incident ray with the normal is equal to the angle made by the reflected ray with the normal i.e.
Now, extend the incident ray forwards. Then
  
|
"The journey of a thousand miles begins with one step."
- Lao Tzu
Like and unlike the proverb above, the solution to a problem begins (and continues, and ends) with simple, logical steps. But as long as one steps in a firm, clear direction, with long strides and sharp vision, one would need far, far less than the million of steps needed to journey a thousand miles. And mathematics, being abstract, has no physical constraints; one can always restart from a scratch, try new avenues of attack, or backtrack at an instant's notice. One does not always have these luxuries in other forms of problem-solving (e.g. trying to go home if you are lost). |
this reply: 0 points
(with 0 
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
11 Oct 2008 17:55:44 IST
|
|
|
no it will be 180 - 60 = 120 degrees.
|
---------------------------------------------------------------
- Gaurav Ragtah (spideyunlimited)
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
|
|
(edit) Now, I have corrected it.
|
"The journey of a thousand miles begins with one step."
- Lao Tzu
Like and unlike the proverb above, the solution to a problem begins (and continues, and ends) with simple, logical steps. But as long as one steps in a firm, clear direction, with long strides and sharp vision, one would need far, far less than the million of steps needed to journey a thousand miles. And mathematics, being abstract, has no physical constraints; one can always restart from a scratch, try new avenues of attack, or backtrack at an instant's notice. One does not always have these luxuries in other forms of problem-solving (e.g. trying to go home if you are lost). |
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
11 Oct 2008 18:39:43 IST
|
|
|
u forgot to consider the directions of the rays.
|
---------------------------------------------------------------
- Gaurav Ragtah (spideyunlimited)
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
12 Oct 2008 03:06:38 IST
|
|
|
BUT THE ANGLE SHOULD BE 60 ISNT IT
|
From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king.
MY BLOG
http://my.opera.com/vu2rje/blog/ |
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
12 Oct 2008 10:48:56 IST
|
|
|
yes i also thnk tht it shu e 60 egree......
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
12 Oct 2008 13:26:41 IST
|
|
|
yaa. it shud be 60 bcoz i+r=60
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
12 Oct 2008 13:33:25 IST
|
|
|
all of you are forgetting the direction vectors.. u have to make the 2 vectors co-initial first and then see the angle between them.. extend the incident ray
|
---------------------------------------------------------------
- Gaurav Ragtah (spideyunlimited)
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
12 Oct 2008 13:40:23 IST
|
|
|
yup,it is like vectors the angle between two vectors is the angle between their heads or tails.
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
12 Oct 2008 17:32:30 IST
|
|
|
u mention in question wether you want deviation or angle between two rays!!
if deviation then ans is 120 if not then it is 60.
actuly above vector people should answer me what is the direction of normal???
|
this reply: 0 points
(with 0
in 0 votes ) [?]
|
|
You have to be logged on to rate
|
|
|
|
|
Moderation Team
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
1
