Home
Class 12
PHYSICS
These question consists of two statement...

These question consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five responses.
Assertion: For higher temperature, the peak emission wavelength of a black body shifts to lower wavelengths.
Reason Peak emission wavelength of a blackbody is proportional to the fourth power of temperature.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Wien's relation given `lamda` at maximum intensity, `lamda_(m) cdot T=` constant.

Stefan's law,
`sigma T^(4)=` intensity of emission of a particular wavelength does not explains the shift of `lamda_(at)` with absolute temperature.
Promotional Banner

Similar Questions

Explore conceptually related problems

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five responses. Reason: In an eleastic collision, the linear momentum of the system is conserved.

These question consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five responses. Assertion: Emissive power of a perfectly black body is one. Reason: Absorptive power of perfectly black body is one.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following four responses Assertion The weighing machine measures the weight of a body. Reason Weightlessness means the absence of weight.

The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: Charge on the complex of ferric ion with EDTA is minus one. Reason: EDTA is a hexadentate ligand.

These questions consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: [Co(NO_2)_3(NH_3)_3] does not show optical isomerism. Reason: It has a plane of symmetry.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following four responses Assertion Friction opposes motion of a body. Reason Static friction is self adjusting while kinetic friction is constant.

These question consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five responses. Assertion: Gravity plays very important role in the process of natural convection. Reason: Convection mainly takes place in liquids and gases.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following four responses Assertion In the shown figure, tension T connected to the ceiling is 10 N lt T lt 20 N Reason System is not stationary.

These question consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following four responses. Assertion: Absorptive power of any substance is temperature independent. Buit emissive power depends on the temperature. Reason: Emissive power alpha T^(4)

These questions consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following five responses. Assertion: Specialization of cells is useful for organism. Reason: It increases the operational effciency of an organism.