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General Physics

Blazing goIITian

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8 Feb 2009 20:13:39 IST

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608

ASSERTION AND REASON

None

A: All physically correct equations are dimensionally correct.
R: Physical correctness depends on dimensional correctness and the numerical values of dimensionless constants used

a. if both are correct and 2nd is proper xplanation of 1st.

b. if both are correct and 2nd is not proper xplanation of 1st.

c. if 1st is true and 2nd is false

d. if both are false

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Comments (10)

APOORV PANSE

Scorching goIITian

Joined: 18 Nov 2007

Posts: 293

8 Feb 2009 21:08:05 IST

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assertion is true. because, if its dimensions are not correct, then it would not be physically correct.REASON IS CORRECT EXPLAINATION OF ASSERTION.I THINK SO.

Tapas Gandhi

New kid on the Block

Joined: 26 Feb 2009

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28 Feb 2009 00:54:42 IST

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A - stat. 1 is correct and stat. 2 is correct explanation of stat. 1

same reasaon as APOORV PANSE

ramyani chakrabarty

Blazing goIITian

Joined: 22 Apr 2007

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28 Feb 2009 01:30:49 IST

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'',' Off to a nu start!!

Blazing goIITian

Joined: 13 Jan 2007

Posts: 1289

28 Feb 2009 01:39:19 IST

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i agree wid ramyani...it shud be d!

Little_Master

Scorching goIITian

Joined: 19 Apr 2008

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1 Mar 2009 22:20:01 IST

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It is b).Statement two doesn't explain statement one. But both are correct. Statement two covers statement one also.Ramyani pls explain your answer

NiTzZZ "tHe eUpHoRiA z rIsIng...."

Blazing goIITian

Joined: 24 Feb 2009

Posts: 319

1 Mar 2009 22:40:20 IST

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answer is c....2nd one z wrong

AIR 538 Asish

Blazing goIITian

Joined: 29 Nov 2008

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1 Mar 2009 22:45:31 IST

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yes (A) same reason as apoorv..... but i have a doubt.... vel. in nth second Snth = u + a(2n-1)/2 ..... if u check dimensions then [S] = [L] while [RHS] = [LT-1] how????

JPS

Blazing goIITian

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2 Mar 2009 07:38:58 IST

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APOORV PANSE

Scorching goIITian

Joined: 18 Nov 2007

Posts: 293

2 Mar 2009 15:52:24 IST

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IN EQUATION, Snth = u + a(2n-1)/2there is a hidden dimension of " t ".actully, t is 1sec because we r calculating for " nth" second.WE USUALLY NEGLET THE DIMENTION OF TIMES = u(1sec) + a(2n-1)/2ab aaya samajh me?

Sparkling kid

Blazing goIITian

Joined: 24 Mar 2009

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24 Mar 2009 20:58:39 IST

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its A because a dimensially incorrect equation would be definately incorrect.........

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