MHT CET 2023 11th May Morning Shift | Heat and Thermodynamics Question 230 | Physics

A black body radiates maximum energy at wavelength '$$\lambda$$' and its emissive power is 'E' Now due to change in temperature of that body, it radiates maximum energy at wavelength $$\frac{2 \lambda}{3}$$. At that temperature emissive power is

$$\frac{81}{16}$$

$$\frac{27}{32}$$

$$\frac{18}{10}$$

$$\frac{9}{4}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

Which of the following graphs between pressure (P) and volume (V) correctly shows isochoric changes?

MHT CET 2023 10th May Evening Shift Physics - Heat and Thermodynamics Question 274 English

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

A metal rod $$2 \mathrm{~m}$$ long increases in length by $$1.6 \mathrm{~mm}$$, when heated from $$0^{\circ} \mathrm{C}$$ to $$60^{\circ} \mathrm{C}$$. The coefficient of linear expansion of metal rod is

$$1.33 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$

$$1.66 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$

$$1.33 \times 10^{-3} /{ }^{\circ} \mathrm{C}$$

$$1.66 \times 10^{-3} /{ }^{\circ} \mathrm{C}$$

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