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question paper of cg pet 
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Re: question paper of cg pet
The sample question paper for the Chhattisgarh Pre Engineering Test which is required for preparation purpose is as given below. 1. The number of free electrons per 10 mm of an ordinary copper wire is 2 x 1021. The average drift speed of the electrons is 0.25 mm/s. The current flowing is: A. 0.8 A B. 8 A C. 80 A D. 5 A 2. Which of the following cells is more likely to be damaged due to short circuiting? A. Daniel B. Dry C. Acid D. Fuel 3. A gas expands from 5 litre to 105 litre at a constant pressure 100N/m2 . The work done is A. 1 Joule B. 4 Joule C. 8 Joule D. 10 Joule 4. The Helium nuclei can be formed from A. Hydrogen nuclei by process of chain reactionB. Hydrogen nuclei through nuclear fission C. Hydrogen nuclei through nuclear fusion D. None of these 5. In the atom bomb dropped by Americans in 1945 on Nagasaki, Japan, the fissionable material used was A. Helium 4 B. Plutonium 239 C. Uranium 235 D. Uranium 233 6. The engine of a truck moving a straight road delivers constant power. The distance travelled by the truck in time t is proportional to A. t B. t 2 C. √t D. t3/2 7. The velocity of electron in ground state of hydrogen atom is A. 2 x 105 m/s B. 2 x 106 m/s C. 2 x 107 m/s D. 2 x 108 m/s 8. The radius of the first orbit of the electron in a hydrogen atom is 5.3 x 1011 m; then the radius of the second orbit must be A. 15.9 x 1011 m B. 10.6 x 10 m C. 21.2 x 1011 m D. 42.4 x 1011 m 9. A person pushes a rock of 1010Kg mass by applying a force of only 10N for just 4 seconds. The work done is A. 1000 Joule B. 0 J C. nearly zero D. positive 10. One can take pictures of objects which are completely invisible to the eye using camera films which are sensitive to A. ultraviolet rays B. sodium light C. visible light D. infrared rays 11. Light from a 100 watt filament bulb is passed through an evacuated glass tube containing sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, we will observe A. D1 and D2 lines of sodium with good intensity B. dark lines where D1 and D2 lines should have been observed C. continuous radiation from the bulb only D. the entire emission spectrum of sodium 12. Under the action of a constant force, a particle is experiencing a constant acceleration. The power is A. zero B. positive C. negative D. increasing uniformly with time 13. If in a plane convex lens the radius of curvature of the convex surface is 10 cm and the focal length of the lens is 30 cm, the refractive index of the material of the lens will be A. 1.5 B. 1.66 C. 1.33 D. 3 14. A plane convex lens has radius of curvature 30 cm. If the refractive index is 1.33, the focal length of lens is A. 10 cm B. 90 cm C. 30 cm D. 60 cm 15. A beam of light is converging towards a point I on a screen. A plane parallel plate of glass (thickness in the direction of the beam = t, refractive index = µ ) is introduced in the path of the beam. The convergence point is shifted by A. t (µ  1) away B. t (1 + 1/µ ) away C. t (1  1/µ ) nearer D. t (1 + 1/µ ) nearer 16. In Young's double silt experiment the separation between the silts is halved and the distance between the silts and screen is doubled. The fringe width will be A. unchanged B. halved C. doubled D. quadrupled 17. Wavelength of red light is λ r, violet rays is λ v and X ray is λ x then the order of wavelengths is A. λ x >λ v >λ r B. λ v >λ x >λ r C. λ r >λ x >λ v D. λ r >λ v >λ 18. The amount of work done by the labourer who carries n bricks, each of mass m, to the roof of a house whose height is h is A. n mgh B. mgh/n C. zero D. ghn/m 19. In LCR circuit in the state of resonance, which of the following statements is correct? (cosφ)= A. 0 B. 0.5 C. 1 D. None of these 20. In LCR circuit, phase difference between voltage and current cannot be A. 80° B. 90° C. 145° D. 0° 21. If speed is plotted along xaxis and Kinetic energy against yaxis, then the graph obtained has a shape similar to that of A. circle B. ellipse C. hyperbola D. parabola 
