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Question

Given T–P curve for three processes. If initial and final pressure are same for all processes then work done in process 1, 2 and 3 is W subscript 1 end subscript comma W subscript 2 end subscript & W subscript 3 end subscript respectively. Correct order is

  1. W subscript 1 end subscript less than W subscript 2 end subscript greater than W subscript 3 end subscript    
  2. W subscript 1 end subscript greater than W subscript 2 end subscript greater than W subscript 3 end subscript    
  3. W subscript 1 end subscript less than W subscript 2 end subscript less than W subscript 3 end subscript    
  4. W subscript 1 end subscript equals W subscript 2 end subscript equals W subscript 3 end subscript    

The correct answer is: W subscript 1 end subscript greater than W subscript 2 end subscript greater than W subscript 3 end subscript

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text (Given  end text open alpha subscript text lras  end text end subscript equals 1.8 cross times 10 to the power of negative 5 end exponent degree C to the power of negative 1 end exponent comma alpha subscript text sleel  end text end subscript equals 1.2 cross times 10 to the power of negative 5 end exponent blank to the power of ring operator end exponent C to the power of negative 1 end exponent comma Y subscript text steel  end text end subscript equals 2 cross times 10 to the power of 11 end exponent N m to the power of negative 2 end exponent comma Y subscript text bas  end text end subscript equals 1.7 cross times 10 to the power of 7 end exponent N m to the power of negative 2 end exponent close parentheses

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

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on relative change of momentum with respect to surface. Let any instant the velocity of surface is u, then above equation becomes – F equals rho A open parentheses V subscript 0 end subscript minus u close parentheses to the power of 2 end exponent left square bracket 1 minus c o s invisible function application theta right square bracket Based on above concept, in the below given figure, if the cart is frictionless and free to move in horizontal direction, then answer the following :

Given cross-section area of jet equals 2 cross times 10 to the power of negative 4 end exponent text end text m to the power of 2 end exponent velocity of jet V subscript 0 end subscript equals 10 text end text m divided by s e c., density of liquid equals 1000 text end text k g divided by m subscript blank superscript 3 end superscript comma M a s s of cart equals M equals 10 text end text k g. Initially left parenthesis t equals 0 right parenthesis the force on the cart is equal to :

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Given cross-section area of jet equals 2 cross times 10 to the power of negative 4 end exponent text end text m to the power of 2 end exponent velocity of jet V subscript 0 end subscript equals 10 text end text m divided by s e c., density of liquid equals 1000 text end text k g divided by m subscript blank superscript 3 end superscript comma M a s s of cart equals M equals 10 text end text k g. Initially left parenthesis t equals 0 right parenthesis the force on the cart is equal to :

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A cylindrical vessel of 90 cm height is kept filled upto the brim. It has four holes 1, 2, 3, 4 which are respectively at heights of 20cm, 30 cm, 40 cm and 50 cm from the horizontal floor PQ. The water falling at the maximum horizontal distance from the vessel comes from

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Two forces F subscript 1 end subscript and F subscript 2 end subscript act on a thin uniform elastic rod placed in space. Force F subscript 1 end subscript acts at right end of the rod and F subscript 2 end subscript acts exactly at centre of the rod as shown (both forces act parallel to length of the rod).
i) F subscript 1 end subscript causes extension of rod while F subscript 2 end subscript causes compression of rod.
ii) F subscript 1 end subscript causes extension of rod and F subscript 2 end subscript also causes extension of rod.
iii) F subscript 1 end subscript causes extension of rod while F subscript 2 end subscript does not change length of rod.
The correct order of True / False in above statements is

Two forces F subscript 1 end subscript and F subscript 2 end subscript act on a thin uniform elastic rod placed in space. Force F subscript 1 end subscript acts at right end of the rod and F subscript 2 end subscript acts exactly at centre of the rod as shown (both forces act parallel to length of the rod).
i) F subscript 1 end subscript causes extension of rod while F subscript 2 end subscript causes compression of rod.
ii) F subscript 1 end subscript causes extension of rod and F subscript 2 end subscript also causes extension of rod.
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Physics-General
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A rod of length 1000 mm and co-efficient of linear expansion alpha equals 10 to the power of negative 4 end exponent per degree is placed symmetrically between fixed walls separated by 1001 mm. The Young's modulus of the rod is 10 to the power of 11 end exponent N divided by m to the power of 2 end exponent. If the temperature is increased by 20 to the power of ring operator end exponent C, then the stress developed in therod is (in N divided by m to the power of 2 end exponent):

A rod of length 1000 mm and co-efficient of linear expansion alpha equals 10 to the power of negative 4 end exponent per degree is placed symmetrically between fixed walls separated by 1001 mm. The Young's modulus of the rod is 10 to the power of 11 end exponent N divided by m to the power of 2 end exponent. If the temperature is increased by 20 to the power of ring operator end exponent C, then the stress developed in therod is (in N divided by m to the power of 2 end exponent):

Physics-General
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