NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 1167  1171 of 2320
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Question number: 1167
» Properties of Solids & Liquids » Thermal Expansion
Question
The real coefficient of volume expansion of glycerin is 0.000597 per °C and linear coefficient of expansion of glass is 0.000009 per °C. Then the apparent volume coefficient of expansion of glycerin is
Choices
Choice (4)  Response  

a.  0.000558 per °C  
b.  0.00057 per °C  
c.  0.00066 per °C  
d.  0.00027 per °C 
Question number: 1168
Question
Unpolarised light of intensity 32 Wm ^{2} passes through three polarizers such that the transmission axis of the last polarizer is crossed with the first. If the intensity of the emerging light is 3 Wm ^{2}, at what angle will the transmitted intensity be maximum?
Choices
Choice (4)  Response  

a.  35°  
b.  15°  
c.  45°  
d.  75° 
Question number: 1169
» Dual Nature of Matter and Radiation » DeBroglie Relation
Question
A photon and an electron have equal energy E. is proportional to
Choices
Choice (4)  Response  

a. 
 
b.  Not depend upon E  
c. 
 
d. 

Question number: 1170
» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics
Question
The latent heat of vaporization of water is 2240 J/gm. If the work done in the process of expansion of 1 g of water is 168 J, then increase in internal energy is
Choices
Choice (4)  Response  

a.  2072 J  
b.  2408 J  
c.  2240 J  
d.  1904 J 
Question number: 1171
» Properties of Solids & Liquids » Thermal Expansion
Question
2 kg of ice at  20°C is mixed with 5 kg of water at 20°C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg /°C and 0.5 kcal/kg /°C while the latent heat of fusion of ice is 80 kcal/kg
Choices
Choice (4)  Response  

a.  7 kg  
b.  2kg  
c.  6 kg  
d.  4 kg 