KEA CET 2012 www.kar.nic.in Physics Question Paper : Karnataka Examinations Authority

[muthukalee]

Name of the Organisation : Karnataka Examinations Authority KEA (kar.nic.in)
Type of Announcement : Physics Question Paper
Designation : CET 2012

KEA Mock Test Page : http://www.kar.nic.in/kea/vikasana/mock_test.html

16-Apr-12 Questions : http://www.kar.nic.in/kea/vikasana/m..._questions.pdf
Answers : http://www.kar.nic.in/kea/vikasana/m...M1_answers.pdf

20-Apr-12 Questions : http://www.kar.nic.in/kea/vikasana/m..._questions.pdf
Answers : http://www.kar.nic.in/kea/vikasana/m...M2_answers.pdf

24-Apr-12 Questions : http://www.kar.nic.in/kea/vikasana/m..._questions.pdf
Answers : http://www.kar.nic.in/kea/vikasana/m...M3_answers.pdf

28-Apr-12 Questions : http://www.kar.nic.in/kea/vikasana/m..._questions.pdf
Answers : http://www.kar.nic.in/kea/vikasana/m...M4_answers.pdf

07-May-12 Questions : http://www.kar.nic.in/kea/vikasana/m..._questions.pdf
Answers : http://www.kar.nic.in/kea/vikasana/m...M5_answers.pdf

14-May-12 Questions : http://www.kar.nic.in/kea/vikasana/m..._questions.pdf
Answers : http://www.kar.nic.in/kea/vikasana/m...M6_answers.pdf

MOCK-CET PHYSICS PAPER-1
3. A truck of mass 0.5 Ton is moving with a speed of 6 ms-1. Sand is poured at the rate of 10 Kg per minute. How much force is needed to keep it moving with the same speed?
1) 1N 2) 50N 3) 500 N 4) 3 N

5. A bird is inside a wire cage hung from a spring balance. The spring balance reading is R1 when the bird is flying and R2 when it is at rest inside the cage. Which of the following is correct?
1) R1>>>R2 2) R1>R2 3) R1<R2 4)R1=R2

6. An ideal heat engine gives out heat at 770C to have a 30% of efficiency. The temperature of the source is
1) 269c 2)773c 3) 673c 4) 227c

7. In an auditorium absorption co-efficient of an open window is
1) zero 2) infinity 3) unity 4) 0.5

9. First law of thermodynamics is a special case of
1) law of conservation of energy 2) Boyle’s law 3) law of conservation of mass 4) Charles law

11. Two waves having the intensities in the ratio of 9:1 produce interference. The ratio of maximum intensities to minimum intensities is
1) 9:1 2) 4:1 3) 2:1 4) 5:4

12. Two sodium lamps are used to produce sustained interference. Which of the following is correct?
1) They cannot produce 2) they can produce 3) they can produce if the intensity of light is less 4) they can produce if the intensity of light is more

13. In which of the following cases no force exerted by a magnetic field on a charge?
1) moving along curved path 2) moving with constant velocity 3) at rest 4) moving in a circle

14. In a step up transformer the turn ratio is 3:2. A battery of emf 4.5 V is connected across the primary. The voltage developed in the secondary is
1) 3 V 2) 4.5 V 3) 1.5 V 4) zero

15. The core of the transformer is laminated to avoid loss of energy due to
1) heating 2) hysteresis 3) eddy current 4) flux leakage

16. A binary full adder circuit consists of
1) two half adders 2) two half adders and one AND gate 3) two NAND gates4) two half adders and one OR gate

17. In a transistor emitter-base junction and collector-base junctions are respectively
1) forward and reverse biased 2) reverse and forward biased 3) forward and forward biased 4) reverse and reverse biased

18. When both the source of sound and observer approach each other with a speed equal to half the velocity of sound, the change in frequency of sound as detected by the observer is
1) zero 2) 50% 3) 200% 4) 25%

19. Mass number A of a nucleus whose radius is 3.9 fermi is
1) 10 2) 39 3) 17 4) 27

22. Water rises up to a height ‘h’ in a capillary tube of certain diameter. When this is replaced by a tube of half the diameter, then water eill rise to a height of
1) 3h 2) 4h 3) h 4) 2h

23. In the pressure cooker the cooking is faster because the increase of vapour pressure
1) increases latent heat 2) decreases latent heat 3) increases boiling point 4) decreases boiling point

26. In simple harmonic motion the particle is
1) always accelerated 3) alternately accelerated or retarded 2) always retarded 4) neither accelerated nor retarded

35. Which of the following phenomena cannot produce colours with white light?
1) dispersion 2) interference 3) diffraction 4) polarisation

36. Electric lines of force about a positive point charge are
1) circular and clockwise 2) circular and anti clockwise 3) radially inwards 4) radially out wards
............
For full Question Paper, refer the attached document or the pdf file in the link.

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