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

A closed pipe and an open pipe have their first overtone equal in frequency. Then, the lengths of these pipe are in the ratio

A
$$1: 2$$
B
$$2: 3$$
C
$$3: 4$$
D
$$4: 5$$
2
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In resonance tube, first and second resonance are obtained at depths $$22.7 \mathrm{~cm}$$ and $$70.2 \mathrm{~cm}$$ respectively. The third resonance will be obtained at a depth

A
117.7 cm
B
92.9 cm
C
115.5 cm
D
113.5 cm
3
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A uniform wire $$20 \mathrm{~m}$$ long and weighing $$50 \mathrm{~N}$$ hangs vertically. The speed of the wave at mid point of the wire is (acceleration due to gravity $$=\mathrm{g}=10 \mathrm{~ms}^{-2}$$ )

A
$$4 \mathrm{~ms}^{-1}$$
B
$$10 \sqrt{2} \mathrm{~ms}^{-1}$$
C
$$10 \mathrm{~ms}^{-1}$$
D
Zero $$\mathrm{ms}^{-1}$$
4
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
$$\mathrm{f \le n}$$
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