All Derivation of Class 12 Physics. We covered all the All Derivation of Class 12 Physics MCQs in this post for free so that you can practice well for the exam.
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All Derivation of Class 12 Physics Objectives for Students
Absolute zero is defined as
(a) the temperature at which all molecular motion ceases.
(b) at which water boils at 298 K.
(c) at which liquid Helium boils.
(d) at which the volume becomes zero.
The direction of heat flow between two bodies depends on which of the following?
(a) Their specific heat
(b) Their latent heat
(c) Their temperatures
(d) Their area of contact
Option c – Their temperatures
How many calories are there in a Joule?
(a) 0.24
(b) 0.48
(c) 0.72
(d) 0.96
Option a – 0.24
Which one of the following statements is not correct?
(a) The Kelvin scale of temperature is called the absolute scale.
(b) Visible light radiation has a wavelength range of 400-700 nm.
(c) The capacity to do work is called power.
(d) The wavelength of Gamma rays is less than that of X-rays.
Which one of the following statements is correct?
(a) Any energy transfer that does not involve a temperature difference in some way is not heat.
(b) Any energy transfer always requires a temperature difference.
(c) On heating, the length and volume of the object remain exactly the same.
(d) Whenever there is a temperature difference, heat is the only way of energy transfer.
Option a – Any energy transfer that does not involve a temperature difference in some way is not heat
The absolute zero temperature is 0°K. In °C unit, which one of the following is the absolute zero temperature?
(a) 0°C
(b) -100°C
(c) -273.15°C
(d) -173.15°C
Option c – -273.15°C
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