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General Physics

New kid on the Block

 Joined: 21 May 2007 Post: 11
21 May 2007 13:42:37 IST
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is theta a scalar quantity or vector quantity??????
Engineering Entrance , Medical Entrance , AIPMT , JEE Main , AIIMS , JEE Advanced , Physics

hii

cn any1 tell me if thete() is a scalar quantity or a vector quantity.....

plss tell me the explaination too....i need it....it's realli urgent!!!!!

Blazing goIITian

Joined: 22 Apr 2007
Posts: 2537
21 May 2007 13:50:51 IST
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as theta doesn't follow triangle law  of addition,but follows ordinary  rules  of algebra (2theta + 5theta -theta=6theta),it is a scalar quantity.

in case of electric current,it has got direction but it is a scalar quantity as it doen't follow triangle law of  addition.

Cool goIITian

Joined: 20 May 2007
Posts: 39
21 May 2007 13:58:13 IST
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theta is neither scalar nor vector. It falls in another category called tensors.
Try it by rotating your pencil box or book three times in diff orders

Blazing goIITian

Joined: 28 Mar 2007
Posts: 444
21 May 2007 14:12:00 IST
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theta is the only dimension less variable which has a unit.(in case of angle).....

Blazing goIITian

Joined: 12 May 2007
Posts: 328
21 May 2007 14:16:16 IST
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hey theta is a greek alphabet
neither a vector nor scalar

Blazing goIITian

Joined: 12 May 2007
Posts: 328
21 May 2007 14:16:47 IST
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rate me if u like my joke

Blazing goIITian

Joined: 22 Apr 2007
Posts: 427
21 May 2007 14:21:25 IST
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theta is a scalar but dtheata is a vector

Cool goIITian

Joined: 16 Dec 2006
Posts: 71
21 May 2007 15:00:58 IST
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theta is scalar quantity and dtheta is vecotr quantity

Blazing goIITian

Joined: 26 Oct 2006
Posts: 530
21 May 2007 16:22:45 IST
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i too think theta is neither a scalar quantity nor a vector quantity.

Hot goIITian

Joined: 26 Mar 2007
Posts: 115
21 May 2007 16:31:10 IST
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infinitesimal angular displacement delta theta is a vector quantity
while finite angular displacement theta is a scalar quantity
remember circular motion?

New kid on the Block

Joined: 20 Feb 2007
Posts: 26
21 May 2007 16:45:59 IST
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theta is a tensor as it does not follow the triangle law of vector addition but it does have direction

Forum Expert
Joined: 19 Oct 2006
Posts: 7797
21 May 2007 20:08:39 IST
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If theta is considered as an angular displacement then it is a vector quantity.

Blazing goIITian

Joined: 16 Mar 2007
Posts: 838
21 May 2007 20:17:32 IST
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Theta is a tensor.

New kid on the Block

Joined: 4 Apr 2007
Posts: 24
24 May 2007 10:59:58 IST
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theta is a vector quantity &its direction is perpendicular to the plane of the paper.

Hot goIITian

Joined: 26 May 2007
Posts: 161
29 May 2007 23:03:36 IST
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theta is a scalar.

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