1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If temperature of gas molecules is raised from $$127^{\circ} \mathrm{C}$$ to $$527^{\circ} \mathrm{C}$$, the ratio of r.m.s. speed of the molecules is respectively

A
$$1: 2$$
B
$$2: 1$$
C
$$1: \sqrt{2}$$
D
$$2: \sqrt{2}$$
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of energy required to raise a satellite to a height '$$h$$' above the earth's surface to that required to put it into the orbit at the same height is ($$\mathrm{R}=$$ radius of earth)

A
$$\frac{2 \mathrm{~h}}{\mathrm{R}}$$
B
$$\frac{h}{R}$$
C
$$\frac{\mathrm{R}}{\mathrm{h}}$$
D
$$\frac{\mathrm{R}}{2 \mathrm{~h}}$$
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

According to Boyle's law, the product PV remains constant. The unit of $$\mathrm{PV}$$ is same as that of

A
energy
B
force
C
impulse
D
momentum
4
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When a metallic surface is illuminated with radiation of wavelength '$$\lambda$$', the stopping potential is '$$\mathrm{V}$$'. If the same surface is illuminated with radiation of wavelength '$$2 \lambda$$', the stopping potential is '$$\left(\frac{\mathrm{v}}{4}\right)$$'. The threshold wavelength for the metallic surface is

A
$$\frac{5}{2} \lambda$$
B
$$3 \lambda$$
C
$$4 \lambda$$
D
$$5 \lambda$$
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