Class VII-X Mathematics - Revision sem1 q2

206

Sayantan Hazra ·2013-06-04 23:18:16

Come on ppl, answer this......

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269

Astha Gupta ·2013-06-04 23:46:54

part 1
y+x=-1

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206

Sayantan Hazra ·2013-06-04 23:55:33

Try to make the diagram and then analyse closely.......the answer is incorrrect :(

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269

Astha Gupta ·2013-06-05 00:35:19

is it...x+y=0

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206

Sayantan Hazra ·2013-06-05 01:30:43

Still incorrect..... :(

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337

Sayan Sinha ·2013-06-06 11:55:59

Is part 1: x+y=1 ?

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206

Sayantan Hazra ·2013-06-06 11:58:16

Correct....now try part 2 and 3....

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337

Sayan Sinha ·2013-06-06 12:19:37

part 3: x+y=-1

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206

Sayantan Hazra ·2013-06-06 12:24:39

Correct.....part 2??

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Sayan Sinha Excuse: Feeling sleepy :P
Upvote·0· Reply ·2013-06-06 12:26:07
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337

Sayan Sinha ·2013-06-06 12:27:47

Is the ray going parallel to the mirror?

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206

Sayantan Hazra ·2013-06-06 12:31:40

Yes :).....check out the slope of the mirror and the slope of the incident ray :)

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337

Sayan Sinha ·2013-06-06 12:37:35

Yup... both are 45Â° from the x axis... i.e. slopes are the same...

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Revision sem1 q2

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