## THERMAL PHYSICS QUIZ-10

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. Of the following thermometers, the one which can be used for measuring a rapidly changing temperature is a
•  Thermocouple thermometer
•  Gas thermometer
•  Maximum resistance thermometer
•  Vapour pressure thermometer
Solution

Q2.Temperature of a black body increases from 327℃ to 927℃, the initial energy possessed is 2KJ, what is its final energy
•  32KJ
•  320KJ
•  1200KJ
•  None of these
Solution

Q3.  The amout of radiation emitted by a perfectly black body is proportional to
•   Temperature of ideal gas scale
•  Fourth root f temperature on ideal gas scale
•  Fourth power of temperature on idea gas scale
•  Source of temperature on ideal gas scale
Solution

Q4. A metal rod AB of length 10x has its one end A in ice at 0℃ and the other end B in water at 100℃. If a point P on the rod is maintained at 400℃, then it is found that equal amounts of water and ice evaporate and melt per unit time. The latent heat of evaporation of water is 540 cal/g latent heat of melting of ice is 80 cal/g. If the point P is at a distance of Î»x from the ice end A, find the value of . [Neglect any heat loss to the surrounding]
•  9
•  2
•  6
•  1
Solution

Q5.Consider a compound slab consisting of two different materials having equal lengths, thicknesses and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is
•  2K
•  3K
•  43K
•  23K
Solution

Q6. A thin square steel plate with each side equal to 10 cm is heated by a blacksmith. The rate of radiated energy by the heated plate is 1134 W. The temperature of the hot steel plate is (Stefan’s constant Ïƒ=5.67×10-8watt m-2K-4, emissivity of the plate = 1)
•  1000K
•  1189K
•  2000K
•  2378K
Solution

Q7.Two substances A and B of equal mass m are heated at uniform rate of 6 cal s-1 under similar conditions. A graph between temperature and time is shown in figure. Ratio of heat absorbed HA/HB by them for complete fusion is
•  9/4
•  4/9
•  8/5
•  5/8
Solution

Q8.Two metal strips that constitute a thermostat must necessarily differ in their
•  Mass
•  Length
•  Resistivity
•  Coefficient of linear expansion
Solution

Q9.On a clear sunny day, an object at temperature T is placed on the top of a high mountain. An identical object at the same temperature is placed at the foot of mountain. If both the objects are exposed to sun-rays for two hours in an identical manner, the object at the top of the mountain will register a temperature
•  Higher than the object at the foot
•  Lower than the oject at the foot
•  Equal to the object at the foot
•  None of the above
Solution

Q10. On which of the following scales of temperature, the temperature is never negative
•  Celsius
•  Fahrenheit
•  Reaumr
•  Kelvin
Solution

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