1
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body of mass '$$\mathrm{m}$$' is raised through a height above the earth's surface so that the increase in potential energy is $$\frac{\mathrm{mgR}}{5}$$. The height to which the body is raised is ( $$\mathrm{R}=$$ radius of earth, $$\mathrm{g}=$$ acceleration due to gravity)

A
$$\mathrm{R}$$
B
$$\frac{\mathrm{R}}{2}$$
C
$$\frac{\mathrm{R}}{4}$$
D
$$\frac{\mathrm{R}}{8}$$
2
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

With increase in frequency of a.c. supply, the impedance of an L-C-R series circuit

A
remains constant.
B
increases.
C
decreases.
D
decreases at first, becomes minimum and then increases.
3
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A passenger is sitting in a train which is moving fast. The engine of the train blows a whistle of frequency '$$n$$'. If the apparent frequency of sound heard by the passenger is '$$f$$' then

A
$$\mathrm{f}=\mathrm{n}$$
B
$$\mathrm{f}>\mathrm{n}$$
C
$$\mathrm{f < n}$$
D
$$\mathrm{f \le n}$$
4
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the magnitude of intensity of electric field at a distance '$$r_1$$' on an axial line and at a distance '$$r_2$$' on an equatorial line due to a given short dipole are equal, then $$r_1: r_2$$, is

A
$$\sqrt[3]{2}: 1$$
B
$$\sqrt{2}: 1$$
C
$$1: 2$$
D
$$1: \sqrt[3]{2}$$
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