हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Which of the Following Pairs of Physical Quantities May Be Represented in the Same Unit? - Physics

Advertisements
Advertisements

प्रश्न

Which of the following pairs of physical quantities may be represented in the same unit?

विकल्प

  • Heat and temperature

  • Temperature and mole

  • Heat and work

  • Specific heat and heat

MCQ

उत्तर

Heat and Work

 

As work done in raising temperature of a body is actually the heat supplied to the body, heat and work may be represented in the same unit.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Calorimetry - MCQ [पृष्ठ ४६]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 3 Calorimetry
MCQ | Q 5 | पृष्ठ ४६

संबंधित प्रश्न

A pinhole is made in a hollow sphere of radius 5 cm whose inner wall is at temperature 727oC. Find the power radiated per unit area. [Stefan’s constant σ = 5.7 x 10-8 J/m2 s K4 , emissivity (e) = 0.2]


Answer the following:

There were two fixed points in the original Celsius scale as mentioned above which were assigned the number 0 °C and 100 °C respectively. On the absolute scale, one of the fixed points is the triple-point of water, which on the Kelvin absolute scale is assigned the number 273.16 K. What is the other fixed point on this (Kelvin) scale?


The substance which allows heat radiations to pass through is _______.

(A) iron

(B) water vapour

(C) wood

(D) dry air


Does the temperature of a body depend on the frame from which it is observed?


A spherical shell is heated. The volume changes according to the equation Vθ = V0 (1 + γθ). Does the volume refer to the volume enclosed by the shell or the volume of the material making up the shell?


Which of the curves in the following figure represents the relation between Celsius and Fahrenheit temperatures?


Which of the following pairs may give equal numerical values of the temperature of a body?


A spinning wheel is brought in contact with an identical wheel spinning at identical speed. The wheels slow down under the action of friction. Which of the following energies of the first wheel decreases?

(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal


Should a thermometer bulb have large heat capacity or small heat capacity?


Heat and work are equivalent. This means, ____________ .


A railway track (made of iron) is laid in winter when the average temperature is 18°C. The track consists of sections of 12.0 m placed one after the other. How much gap should be left between two such sections, so that there is no compression during summer when the maximum temperature rises to 48°C? Coefficient of linear expansion of iron = 11 × 10–6 °C–1.


The volume of a glass vessel is 1000 cc at 20°C. What volume of mercury should be poured into it at this temperature so that the volume of the remaining space does not change with temperature? Coefficients of cubical expansion of mercury and glass are 1.8 × 10–6 °C–1 and 9.0 × 10–6 °C–1 , respectively.


The densities of wood  and benzene at 0°C are 880 kg m3 and 900 kg m–3 , respectively. The coefficients of volume expansion are 1.2 × 10–3 °C–1 for wood and 1.5 × 10–3 °C–1for benzene. At what temperature will a piece of wood just sink in benzene?


A steel rod of length 1 m rests on a smooth horizontal base. If it is heated from 0°C to 100°C, what is the longitudinal strain developed?


A steel wire of cross-sectional area 0.5 mm2 is held between two fixed supports. If the wire is just taut at 20°C, determine the tension when the temperature falls to 0°C. Coefficient of linear expansion of steel is 1.2 × 10–5 °C–1 and its Young's modulus is 2.0 × 10–11 Nm–2.


‘An object contains more heat’- is it a right statement? If not why?


Two tumblers of A and B have water at 50°C temperature. If the water from A and B is poured into tumbler C. The temperature of C is ______.


Two objects are said to be in thermal contact if they can exchange heat energy.


Analogy

Evaporation:: 100°C: Freezing:: ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×