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CSIR UGC NET 2008 : PHYSICAL SCIENCES - PAPER I

25 pages, 100 questions, 35 questions with responses, 36 total responses,

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PHYSICAL SCIENCES PAPER I (PART B ) 41. The resolution of a Michelson interferometer operating with a light source of 640 nm wavelength is 1. 2. 3. 4. 42. When a terminal is at virtual ground, then 1. 2. 3. 4. 43. 0.5 V. 1.0 V. 2.0 V. 0.25 V. A voltage of 2300 volts is applied to a cylindrical counter with an anode wire of radius 0.01 cm and a cathode inner radius of 1.0 cm. The electric field at the anode surface is 1. 2. 3. 4. 46. PTR offers more accuracy, THR more resolution. PTR offers more resolution, THR more accuracy. Both offer same accuracy, THR offers more resolution. Both offer same resolution, PTR offers more accuracy. A four bit A/D converter is used to convert an analog voltage of 8V. The maximum error is 1. 2. 3. 4. 45. both current and voltage are zero. only voltage will be zero. only current will be zero. both voltage and current are not zero. Platinum resistor (PTR) and a thermistor(THR) are used to measure room temperature. Which of the following is true? 1. 2. 3. 4. 44. 1280 nm. 640 nm. 80 nm. 1 nm. 5 5 5 5 104 V/cm. 103 V/cm. 105 V/cm. 102 V/cm. A -ray of energy 1 keV is passed through a solid absorber of thickness 3 cm and mass attenuation coefficient 3 cm2/g at temperature T1. If the same absorber is melted at temperature T2, the mass attenuation coefficient will be 1. 2. 3. 4. 3 (T1/T2)2 cm2/g. 1/3 cm2/g. 3 cm2/g. 3 (T2/T1)2 cm2/g.

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Additional Info : CSIR UGC (National Eligibility Test) NET New Exam Scheme December 2008 Model Question Paper - Physical Sciences Paper I Joint CSIR UGC NET Exam Question Papers
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