PAPER 1 phisics Multiple choise doubts

[1992]

Btw i cant help u on other Qs
at least not today as i hav math paper tomoro
sorry!

np dude and ty for the ans , well explained

 

[leena]

ppl plzzzzzz i need help Q 21 oct/nov 2006 plz i cannt get the right ans so plz any one help me

 

[obr***]

i will bt after a while!! bt i will tell u b4 da phy paper- dnt worry!!

 

[leena]

thx 4 tht but if possible can i know 2day???????? only if possible plzzz
thx ya alot

 

[ds29]

I can help you

Ok P = h$g where P = Pressure h = height $ = density and g = gravitational

We know total Pressure is 17.5 * 10^6 Pa

We first consider Pressure by Oil
P = x * 830 * 9.81
P = 8142.3x

Next we consider Pressure by water
Here we have to consider height as (2000-x) since we are given total length is 2000m

P = (2000-x) * 1000 * 9.81
= 1.962 * 10^7 - 9810x

Now both of these pressures = Total Pressure
Therefore
8142.3X - 9810X = 17.5*10^6 - 1.962 * 10^7
-1667.7X = -2.12* 10^6
X = 1271m
Approximate equal to 1270 and therefore answer is D

 

[leena]

thx alot u really helped me alot thx once more