AIEEE Solved Question Papers : All India Engineering / Architecture Entrance Examination

AIEEE :
The All India Engineering Entrance Examination (AIEEE), was an examination organised by the Central Board of Secondary Education (CBSE) in India. Introduced in the year 2002, this national level competitive test is for admission to various under-graduate engineering and architecture courses in institutes accepting the AIEEE score, mainly 30 National Institutes of Technology (NITs) and 5 Indian Institute of Information Technology (IIITs). The examination was generally held on the last Sunday of April and results are announced in the last week of May or the first week of June. Candidates are ranked on an all-India basis and state basis. Thus, they have an All India Rank (AIR) and a State Rank (SR).

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Physics Solved Papers :
1 : A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5 × 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
(1) 0.025 Nm–1
(2) 0.0125 Nm–1
(3) 0.1 Nm–1
(4) 0.05 Nm–1
Ans. (1)

2 : Helium gas goes through a cycle ABCDA (consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly (Assume the gas to be close to ideal gas)
(1) 12.5%
(2) 15.4%
(3) 9.1%
(4) 10.5%
Ans. (2)

3 : Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be
(1) 6
(2) 2
(3) 3
(4) 5
Ans. (1)

4 : An object 2.4 m in front of a lens forms a sharp image on a film 12 cm behind the lens. A glass plate 1 cm thick, of refractive index 1.50 is interposed between lens and film with its plane faces parallel to film. At what distance (from lens) should object be shifted to be in sharp focus on film –
(1) 5.6 m
(2) 7.2 m
(3) 2.4 m
(4) 3.2 m
Ans. (4)

5 : Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is
(1) 3%
(2) 6%
(3) zero
(4) 1%
Ans. (2)

6 : A Carnot engine, whose efficiency is 40% takes in heat from a source maintained at a temperature of 500 K. It is desired to have an engine of efficiency 60%. Then, the intake temperature for the same exhaust (sink) temperature must be
(1) 600 K
(2) efficiency of Carnot engine cannot be made larger than 50%
(3) 1200 K
(4) 750 K
Ans. (4)

7 : A cylindrical tube, open at both ends, has a fundamental frequency, f, in air. The tube is dipped vertically in water so that half of it is in water. The fundamental frequency of the air-column is now
(1) 2f
(2) f
(3) f/2
(4) 3f/4
Ans. (2)

8 : Two electric bulbs marked 25W-220 V and 100 W-220 V are connected in series to a 440 V supply. Which of the bulbs will fuse –
(1) Neither
(2) Both
(3) 100 W
(4) 25 W
Ans. (4)

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