Exams › NEET › Physics

If λₘ denotes the wavelength at which the radiative emission from a black body at temperature T is maximum, then:

1. λₘ ∝ T⁻¹
2. λₘ ∝ T⁴
3. λₘ is independent of T
4. λₘ ∝ T

Correct answer: λₘ ∝ T⁻¹

Solution

According to Wien's Displacement Law, the wavelength at which the emission of a black body is maximum (λₘ) is inversely proportional to its absolute temperature (T).

Related NEET Physics questions

• An instrument used to measure high temperature is
• Ocean currents are caused by the setting up of in water
• For the same mass, which one of the following has the maximum thermal capacity?
• The excess temperature of a body falls from \( 12^{\circ} \mathrm{C} \) to \( 6^{\circ} \mathrm{C} \) in 5 minutes, then the time to fall the excess temperature from \( 6^{\circ} \mathrm{C} \) to \( 3^{\circ} \mathrm{C} \) is (assume the Newton's cooling is valid)
• Bunty mixed 440 gm of ice at \( 0^{\circ} \mathrm{C} \) with \( 540 \mathrm{gm} \) of water at \( 80^{\circ} \mathrm{C} \) in a bowl. Then what would remain after sometime in the bowl?
• Mercury boils at \( 356^{\circ} \mathrm{C} \). However mercury thermometers are made such that they can measure temperatures up to \( 500^{\circ} \mathrm{C} \). This is done by :

⚔️ Practice NEET Physics free + battle 1v1 →