1 .KINEMATICS 1.1 Introduction 1.2 Rest and Motion 1.3 Parameters of Kinematics for all types of motion (1-D,2-D and 3-D) 1.4 Graph 1.5 Acceleration on Curved Surface Path 1.6 Relative Motion ( 1-D) 1.7 Projectile Motion ( an ...
***ELECTROMAGNETIC SPECTRUM:- The orderly arrangement of electromagnetic wave in increase or decrease order of wavelength or frequency is called electromagnetic spectrum. *** RADIATION :-- If the body temperature is more than 0K, the body transfers heat energy in the form of electromagnetic wave, this mode of heat transfer is called radiation. :--The mode of heat transfer by radiation does not require a medium. :- Electromagnetic waves can have different wavelength and can travel in vacuum with the same speed of light that is equal to 3× 10⁸ ms⁻¹. :-heat energy is carried by infrared waves with wavelength greater than 750nm. ***Newton Law Of Cooling:-- The rate of loss of heat of the body is directly proportional to the difference of temperature of the body. Q₁ A pan filled with hot food cool from 90°C to 86 °C in 120 seconds when the room temperature is at 20°C . how long will it lakes to cool from 71°C to 69°C? Ans :- 42 seconds ...
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