NEETPhysicsThermal Properties of Matter
Assertion : temperature than red star. Reason : Wein's displacement law states that (T (1 / _m ) )
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A).
- BBoth (A) and (R) are true and (R) is NOT the correct explanation of (( A ) ).
- C(A) is true but (R) is false.
- DBoth (A) and (R) are false.
Correct answer
A. Both (A) and (R) are true and (R) is the correct explanation of (A).
Step-by-step solution
Assertion is true a blue star does have a higher temperature than a red star. By Wein's displacement law- ( T ) (wavelength) (= b ) (Wein's constant) Therefore, temperature is inversely proportional to wavelength so a star with higher temperature will have a shorter wavelength and will appear blue. Reason is true and is the correct explanation of assertion.