Madhya Pradesh DAHET Previous Year 2013 Question Paper on Physics
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| DAHET – 2013 – Physics | |
| Sr. No. | Questions with multiple options |
| 1. | The rods of same metal of same area of cross-section are respectively of 0.5 m and 0.8 m lengths. Assuming that the rate of heat conduction through the two rods is same, calculate the temperature difference between the ends of the first rod if the temperature difference between the ends of the second rod is 72°C.
(a) 115.5°C (b) 18°C (c) 45°C (d) 57.8°C |
| 2. | The image of a point source of light is made by a convex lens on a screen kept at 20 cm from the lens. A concave lens of focal length 15 cm is now placed exactly at the middle of the convex lens and the screen. In which direction and by what distance the screen has to be moved to get the image again on the screen?
(a) 20 cm away from the lenses (b) 20 cm towards from the lenses (c) 15 cm away from the lenses (d) 15 towards from the lenses |
| 3. | A convex lens of focal length 50 cm is kept in contact with a concave lens of focal length 25 cm. The power of the combination is
(a) – 11.5 D (b) + 6.0 D (c) + 4.0 D (d) – 2.0 D |
| 4. | Four lenses of focal lengths + 10 cm, + 20 cm, + 100 cm, and + 200 cm are available for making an astronomical telescope. The telescope will have largest magnification if the focal length of the objective (fe) are
(a) (f0) = + 200 cm; (fe) = + 10 cm (b) (f0) = + 200 cm; (fe) = + 20 cm (c) (f0) = + 100 cm; (fe) = + 20 cm (d) (f0) = + 20 cm; (fe) = + 10 cm |
| 5. | If and respectively represent the focal length of the objective and the eye-piece of a microscope, then
(a) f0 <fe (b) f0>fe (c) f0 =fe (d) f0= 25 cm, fe> 25 cm |
| 6. | Which of the following statement is NOT TRUE in case of hypermetropia of human eye?
(a) The distance between the eye lens and the retina is reduced. (b) The image of the object is used to get rid of the defect. (c) Concave lens is used to get rid of the defect. (d) Convex lens is used to get rid of the defect. |
| 7. | If the electron of the hydrogen atom acquires 20 eV of extra energy, it will
(a) Moves a free electron with 6.4 eV kinetic energy (b) Moves a free electron with 20 eV kinetic energy (c) Move in its orbit with larger angular velocity (d) Go into the excited state of hydrogen atom |
| Data Collected By – K. Jeyanthi | |
| Published on – 1st Nov 2021 | |
| Last Updated On – 03rd Nov 2021 | |
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