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Physics Misc. 2
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Physics Misc. 2
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21 Questions

1. Match List I with List II and select the correct answer using the codes given below the list. [CSE (Pre) 2000] List I (Characteristic) List II (Particle) A. Zero mass 1. Positron B. Fractional charge 2. Neutrino C. Fractional spin 3. Quark D. Integral spin 4. Photon Codes A B C D
2. Assertion (A) In a motion picture, usually 24 frames are projected every second over the whole length of the film. Reason (R) An image formed on the retina of eye persists for about 0.1 s after the removal of stimulus. [CSE (Pre) 2000] Codes
3. Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? [CSE (Pre) 2013. 1. Dispersio. 2. Refractio. 3. Internal reflection Select the correct answer using the codes given below
4. Consider the following statements in respect of a jet engine and a rocket. [CSE (Pre) 2008] I. A jet engine uses the surrounding air for its oxygen supply and so, it is. unsuitable for motion in space. II. A rocket carries its own supply of oxygen in the gas form and fuel. Which of the statements given above is/are correct?
5. The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason? [CSE (Pre) 2011]
6. What is the principle by which a cooling system (radiator) in a motor car works? [CSE (Pre) 2010]
7. A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the same material, are all heated to 20°C above room temperature. When left to cool in the room, which of them will reach the room temperature first? [CSE (Pre) 2002]
8. With reference to technologies for solar power production, consider the following statements [CSE (Pre) 2014. 1. 'Photovoltaic' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilises the Sun's rays to generate heat which is further used in electricity generation process. 2. Photovoltaic generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC). 3. India has manufacturing base for Solar Thermal technology, but not for Photovoltaic. Which of the statements given above is/are correct?
9. Fluorescent tubes are fitted with a choke. The choke coil [CSE (Pre) 2000]
10. Consider the following phenomena [CSE (Pre) 2013. 1. Size of the Sun at dusk. 2. Colour of the Sun at dawn. 3. Moon being visible at dawn. 4. Twinkle of stars in the sky. 5. Polestar being visible in the sky. Which of the above are optical illusions?
11. Regarding the atom of a chemical element, magnetic quantum number refers to [CSE (Pre) 2003]
12. Assertion (A) In our houses, the current in AC electricity line changes direction 60 times per second. Reason (R) The frequency of alternating voltage supplied is 60 Hz. [CSE (Pre) 2004]
13. Assertion (A) In our houses, the current in AC electricity line changes direction 60 times per second. Reason (R) The frequency of alternating voltage supplied is 60 Hz. [CSE (Pre) 2004]
14. Two wires have their lengths, diameters and resistivities all in the ratio of 1:2. If the resistance of the thiner wire is 10 W, then the resistance of the thicker wire is [CSE (Pre) 2001]
15. Consider the following statements in respect of a jet engine and a rocket. [CSE (Pre) 2008] I. A jet engine uses the surrounding air for its oxygen supply and so, it is. unsuitable for motion in space. II. A rocket carries its own supply of oxygen in the gas form and fuel. Which of the statements given above is/are correct?
16. Assertion (A) An iron ball floats on mercury but gets immersed in water. Reason (R) The specific gravity of iron is more than that of mercury. [CSE (Pre) 2002] Codes
17. What is the principle by which a cooling system (radiator) in a motor car works? [CSE (Pre) 2010]
18. Fluorescent tubes are fitted with a choke. The choke coil [CSE (Pre) 2000]
19. Which one of the following laser types is used in a laser printer? [CSE (Pre) 2008]
20. The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason? [CSE (Pre) 2011]
21. What is the order of magnitude of electric resistance of the human body (dry)? [CSE (Pre) 2005]

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