## THERMAL PHYSICS QUIZ-6

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background.

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced.

Q1. A liquid of mass M and specific heat S is at a temperature 2t. If another liquid of thermal capacity 1.5 times, at a temperature of t3 is added to it, the resultant temperature will be
•  43t
•  t
•  t2
•  23t
Solution

Q2.The graph signifies
•  Adiabetic expansion of a gas
•  Isothermal expansion of a gas
•  Change of state from liquid to solid
•  cooling of a heated solid
Solution

Q3.  The variation of density of water with temperature is represented by the
•   a
•  b
•  c
•  d
Solution

Q4. During constant temperature,we feel colder on a day when the relatve humidity will be
•  25%
•  12.5%
•  50%
•  75%
Solution

Q5."Good emitters are good absorbers" is a statement concluded from
•  Newton's law of cooling
•  Stefan's law of radiation
•  provost's theory
•  Kirchhoff's law
Solution

Q6. Water has maximum density at
•  0℃
•  32oF
•  -4℃
•  4℃
Solution

Q7.Two rods P and Q have equal lengths. Their thermal conductivities are K1 and K2 and cross sectional areas are A1 and A2. When the temperature at ends of each rod are T1 and T2 respectively, the rate of flow of heat through P and Q will be equal, if
•  A1A2=K2K1
•  A1A2=K2K1T2T1
•  A1A2= K1K2
•  A1A2= K2K12
Solution

Q8.Amount of heat required to raise the temperature of a body through 1k is called its
•  Water equivalent
•  Thermal capacity
•  Entropy
•  specific heat
Solution

Q9.A lead ball moving with a velocity V strikes a wall and stops. If 50% of its energy is converted into heat, then what will be the increase in temperature (Specific heat of lead is S)
•  2V2JS
•  V24JS
•  V2J
•  V2S2J
Solution

Q10. A body takes 5 minutes to cool from 90℃ to 60℃. If the temperature of the surroundings is 20℃, the time taken by it to cool from 60℃ to 30℃ will be
•  5 min
•  8 min
•  11 min
•  12 min
Solution

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