Thermal Properties of Matter MCQs for NEET — Physics Questions with Answers

Conduction                 

Convection

Radiation                     

Both (a) and (b)

The radiation is emitted only during the day

The radiation is emitted during the summers and absorbed during the winters

The radiation emitted lies in the ultraviolet region and hence is not visible

The radiation emitted is in the infra-red region

Wien’s law                               

Rayleigh  law

Planck’s law of radiation             

Stefan’s law of radiation

IR radiations are used for long distance photography

IR radiations arise due to inner electron transitions in atoms

IR radiations are detected by using a bolometer

Sun is the natural source of IR radiation

Radiation

Convection

Conduction

Temperature remains unchanged

1                 

0.5

0                 

Infinity

${\mathrm{\lambda }}_1$                     

${\mathrm{\lambda }}_2$

 ${\mathrm{\lambda }}_1$ and ${\mathrm{\lambda }}_2$         

  ${\mathrm{\lambda }}_1, {\mathrm{\lambda }}_2, {\mathrm{\lambda }}_3$ and ${\mathrm{\lambda }}_4$

Less heat and more cold           

More heat and more cold

More heat and less cold             

Less heat and less cold

e = a                     

$\mathrm{e}=\frac{1}{\mathrm{a}}$

 $\mathrm{e}={\mathrm{a}}^2$                    

$\mathrm{a}={\mathrm{e}}^2$

Rough surfaces are better radiators than smooth surface

Highly polished mirror like surfaces are very good radiators

Black surfaces are better absorbers than white ones

Black surfaces are better radiators than white