1
MHT CET 2021 20th September Evening Shift
+1
-0

A conducting rod of length $$1 \mathrm{~m}$$ has area of cross-section $$10^{-3} \mathrm{~m}^2$$. One end is immersed in baiting water $$\left(100^{\circ} \mathrm{C}\right)$$ and the other end in Ice $$\left(0^{\circ} \mathrm{C}\right)$$. If coefficient of thermal conductivity of $$\mathrm{rod}$$ is $$96 \mathrm{~cal} / \mathrm{sm}^{\circ} \mathrm{C}$$ and latent heat for ice is $$8 \times 10^{-4} \mathrm{cal} / \mathrm{kg}$$ then the amount of ice which will melt in one minute is

A
$$5.4 \times 10^{-3} \mathrm{~kg}$$
B
$$7.2 \times 10^{-3} \mathrm{~kg}$$
C
$$1.8 \times 10^{-3} \mathrm{~kg}$$
D
$$3.6 \times 0^{-3} \mathrm{~kg}$$
2
MHT CET 2021 20th September Evening Shift
+1
-0

Two stars 'P' and 'Q' emit yellow and blue light respectively. The relation between their temperatures $$\left(\mathrm{T}_{\mathrm{P}}\right.$$ and $$\left.\mathrm{T}_{\mathrm{Q}}\right)$$ is

A
$$\mathrm{T_P=T_Q}$$
B
$$\mathrm{T}_{\mathrm{P}}=\frac{\mathrm{T}_{\mathrm{Q}}}{2}$$
C
$$\mathrm{T}_{\mathrm{P}}>\mathrm{T}_{\mathrm{Q}}$$
D
$$\mathrm{T}_{\mathrm{P}}<\mathrm{T}_{\mathrm{Q}}$$
3
MHT CET 2021 20th September Morning Shift
+1
-0

A perfectly black body emits a radiation at temperature 'T$$_1$$' K. If it is to radiate at 16 times this power, its temperature 'T$$_2$$' K should be

A
8T$$_1$$
B
4T$$_1$$
C
2T$$_1$$
D
16T$$_1$$
4
MHT CET 2021 20th September Morning Shift
+1
-0

One mole of an ideal gas expands adiabatically at constant pressure such that its temperature $$T \propto {1 \over {\sqrt V }}$$. The value of $$\gamma$$ for the gas is ($$\gamma = {{{C_p}} \over {{C_v}}},V =$$ Volume of the gas)

A
1.8
B
1.5
C
1.3
D
1.4
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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