1
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of $$1.5 \times {10^{ - 2}}\,\,N$$ (see figure). The length of the slider is $$30$$ $$cm$$ and its weight negligible. The surface tension of the liquid film is AIEEE 2012 Physics - Properties of Matter Question 207 English
A
$$0.0125\,\,N{m^{ - 1}}$$
B
$$0.1\,\,N{m^{ - 1}}$$
C
$$0.05\,\,N{m^{ - 1}}$$
D
$$0.025\,\,N{m^{ - 1}}$$
2
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
Helium gas goes through a cycle $$ABCD$$ (consisting of two isochoric and isobaric lines) as shown in figure efficiency of this cycle is nearly : (Assume the gas to be close to ideal gas) AIEEE 2012 Physics - Heat and Thermodynamics Question 322 English
A
$$15.4\% $$
B
$$9.1\% $$
C
$$10.5\% $$
D
$$12.5\% $$
3
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A liquid in a beaker has temperature $$\theta \left( t \right)$$ at time $$t$$ and $${\theta _0}$$ is temperature of surroundings, then according to Newton's law of cooling the correct graph between $${\log _e}\left( {\theta - {\theta _0}} \right)$$ and $$t$$ is :
A
AIEEE 2012 Physics - Properties of Matter Question 204 English Option 1
B
AIEEE 2012 Physics - Properties of Matter Question 204 English Option 2
C
AIEEE 2012 Physics - Properties of Matter Question 204 English Option 3
D
AIEEE 2012 Physics - Properties of Matter Question 204 English Option 4
4
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
A wooden wheel of radius $$R$$ is made of two semicircular part (see figure). The two parts are held together by a ring made of a metal strip of cross sectional area $$S$$ and length $$L.$$ $$L$$ is slightly less than $$2\pi R.$$ To fit the ring on the wheel, it is heated so that its temperature rises by $$\Delta T$$ and it just steps over the wheel. As it cools down to surrounding temperature, it process the semicircular parts together. If the coefficient of linear expansion of the metal is $$\alpha $$, and its Young's modulus is $$Y,$$ the force that one part of the wheel applies on the other part is : AIEEE 2012 Physics - Heat and Thermodynamics Question 323 English
A
$$2\pi SY\alpha \Delta T$$
B
$$SY\alpha \Delta T$$
C
$$\pi SY\alpha \Delta T$$
D
$$2SY\alpha \Delta T$$
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