Physics question and answers for March 08, 2024
- Q 1x increase in Its temperature 0 ice when the ater of 2 Exercise 1 Fill in the blanks and rewrite the sentence The amount of water vapor in air is...
- Q An ideal gas is expanding such that PT4 constant The coefficient of volume expansion of the gas is 1 11 T 2 3d T 15 3 T 4 4 T
- Q 9 It is desired to make a 20 2 coil of wire which has a zero thermal coefficient of resistance To do this a carbon resistor of resistance R is...
- Q obtained for an ideal gas from state A to B A P diagram is V The temperature of gas increases continuously The temperature of gas decreases continuously The temperature first...
- Q It is seen that the potential energy can reach a maximum value of U at temperature T 10K Ifr and r are 0 9999 r and 1 0003 r for...
- Q 6 A horizontally oriented uniform copper roc of length is rotating about a vertical axis passing through its centre Calculate the rotated frequency at which the rod ruptures Breaking or...
- Q 16 A metal rod A of length expands by Al when its temperature is raised by 100 C Another rod B of different metal of length 2 expands by Al...
- Q Estimate the speed of sound in air at standard temperature and pressure The mass of 7 1mole of air is 29 0 10 kg We know the Alitres at STP...
- Q 30 C 200 7 2 mm 23 CRA CH Jo A a 0 000012 C
- Q A faulty thermometer has its fixed points marked as 30 and 102 The temperature of body as measured by the faulty thermometer is 80 Find the correct temperature of t...
- Q A flask made of glass has a volume of 100 cm at 0 C What is its volume at 100 C Given coefficient of cubical expansion of glass is 2...
- Q A piece of copper wire has a length of 2 m at 10 C Find its length at 100 C Coefficie of linear expansion of copper 17 x 10 C
- Q A uniform disc is spinning about geometrical axis in free space Its temperature is increased by AT The fractional change in its angular velocity is a is coefficient of linear...
- Q A piece of steel has a length of 30 cm at 15 C At 90 C its length increases by 0 027 cm Find its coefficient of linear expansion
- Q 25 A diatomic ideal gas is heated at constant volume until its pressure is doubled It is again heated at constant pressure until its volume is doubled The molar heat...
- Q A sphere of density p specific heat capacity c and radius r is hung by a thermally insulated thread in an enclosure which is kept constant at a lower temperature...
- Q 8 The square ABCD made of 4 metal rods AB BC CD and DA with point A and C remain fixed AB and AD have coefficient of linear expansion a...
- Q 8 The length of a rod as measured in an experiment was found to be 2 48 m 2 46 m 2 49 m 2 50 m and 2 48...
- Q by the gas heat absorbed by the gas A cylindrical tube of uniform cross sectional area A is fitted with two air tight frictionless pistons The pistons are connected to...
- Q constant A perfectly black body with an initial temperature of 573 K is allowed to cool in an evacuated constant temperature enclosure surrounded by melting ice at the rate of...
- Q 34 The rate of increase of thermo e m f with temperature at the neutral temperature of a AIPMT Prelims 2011 thermocouple 1 Is negative 2 Is positive 3 Is...
- Q 35 A Carnot engine whose sink is at 300 K has an efficiency of 40 By how much should the temperature of source be increased so as to increase its...
- Q The temperature coefficient of resistance of a wire is 0 00125 per degree celcius At 300 K its resistance is 1 ohm The resistance of the wire will be 2...
- Q 25 A bar is subjected to axial forces as shown If E is the modulus of elasticity of the bar and A is its area Its elongation will be cross...
- Q Question 18 A system of rods is assembled such that each rod has a length 1 and cross sectional area S The mode of heat transfer is conduction and the...
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