1
MHT CET 2021 24th September Evening Shift
+1
-0

The molecular masses of helium and oxygen are 4 and 32 respectively. The ratio of r.m.s. speed of helium at 327$$^\circ$$ to r.m.s. speed of oxygen at 27$$^\circ$$ will be

A
1 : 6
B
8 : 1
C
1 : 8
D
4 : 1
2
MHT CET 2021 24th September Evening Shift
+1
-0

Which one of the following p-V diagram is correct for an isochoric process:

A
IV
B
II
C
III
D
I
3
MHT CET 2021 24th September Evening Shift
+1
-0

Assume that for solar radiation, surface temperature of the sun is $$6000 \mathrm{~K}$$. If Wien's constant 'b' is $$2.897 \times 10^{-3} \mathrm{~mK}$$, the value of maximum wavelength will be

A
4828$$\mathop A\limits^o$$
B
3648$$\mathop A\limits^o$$
C
6400$$\mathop A\limits^o$$
D
5890$$\mathop A\limits^o$$
4
MHT CET 2021 24th September Evening Shift
+1
-0

A metal sphere cools at the rate of $$1.5^{\circ} \mathrm{C} / \mathrm{min}$$ when its temperature is $$80^{\circ} \mathrm{C}$$. At what rate will it cool when its temperature falls to $$50^{\circ} \mathrm{C}$$. [Temperature of surrounding is $$30^{\circ} \mathrm{C}$$]

A
$$0.9^{\circ} \mathrm{C} / \mathrm{min}$$
B
$$0.6^{\circ} \mathrm{C} / \mathrm{min}$$
C
$$1.5^{\circ} \mathrm{C} / \mathrm{min}$$
D
$$1.2^{\circ} \mathrm{C} / \mathrm{min}$$
EXAM MAP
Medical
NEET