Physics-Objective Related Question Answers
926. The temperature at which a liquid gets converted into vapour state is called its?
boiling point (vaporization point)
927. The temperature at which the vapour gets converted into liquid is called?
condensation point
928. The temperature at which a liquid gets converted into a solid is called?
freezing point
929. The temperature which is equal in Fahrenheat Scale and Kelvin Scale?
574.25k = 574.250 F
930. The process in which a liquid changes into its vapour from its surface at a temperature below its boiling point is called?
evaporation
931. Specific heat of water is?
4200J/Kg°C
932. The coolant used in car radiator is?
water
933. The transfer of heat between different parts of the body or from one body to another in contact with it is called?
conduction
934. The process of transfer of heat from one point of a fluid to another part of a fluid by the movement of fluid itself is called?
convection
935. The transmission of heat from one place to another without heating the medium is called?
radiation
936. Solar energy is received by the earth through which process?
Radiation
937. In a pressure cooker, cooking is faster because of .......?
increased boiling point
938. Absolute zero is the temperature at which?
molecular motion stops
939. What do you mean by heat?
Heat is the agent which gives the sensation of hotness against coldness of the body
940. What is meant by the temperature of a body?
It is the degree of hotness
941. What is boiling point?
It is the temperature at which a liquid boils
942. What is absolute zero?
It is the temperature at which the atoms of a substance become stationary (-273°C or 0°K)
943. An ordinary clock loses time in summer. This is because:?
the length of pendulum increases and time period decreases
944. Sun rays reach on earth by?
radiation
945. How does in a vacuum flask silvering reduce the loss of heat?
By radiation
946. In the celsius temperature scale, what is the absolute zero of temperature?
-273.15°C
947. Why gas thermometers are more sensitive than liquid thermometers?
Because gases expand more than liquids
948. Who propounded Ohm’s law?
George Simon Ohm It will bend towards the metal with lower thermal expansion coefficient.
949. What is critical pressure?
It is the pressure required to liquefy a gas at the critical temperature
950. What is critical volume?
It is the volume occupied by one gram of gaseous substance at critical temperature and critical pressure
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