1
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A tuning fork of frequency '$$n$$' is held near the open end of tube which is closed at the other end and the lengths are adjusted until resonance occurs. The first resonance occurs at length $$L_1$$ and immediate next resonance occurs at length $$L_2$$. The speed of sound in air is

A
$$n\left(L_2-L_1\right)$$
B
$$\frac{\mathrm{n}\left(\mathrm{L}_2-\mathrm{L}_1\right)}{2}$$
C
$$2 n\left(L_2-L_1\right)$$
D
$$\frac{\mathrm{n}\left(\mathrm{L}_2+\mathrm{L}_1\right)}{2}$$
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A sound wave of frequency $$160 \mathrm{~Hz}$$ has a velocity of $$320 \mathrm{~m} / \mathrm{s}$$. When it travels through air, the particles having a phase difference of $$90^{\circ}$$, are separated by a distance of

A
50 cm
B
1 cm
C
25 cm
D
75 cm
3
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A glass tube of $$1 \mathrm{~m}$$ length is filled with water. The water can be drained out slowly from the bottom of the tube. If vibrating tuning fork of frequency $$500 \mathrm{~Hz}$$ is brought at the upper end of the tube then total number of resonances obtained are [Velocity of sound in air is $$320 \mathrm{~ms}^{-1}$$]

A
3
B
4
C
1
D
2
4
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A sound wave is travelling with a frequency of $$50 \mathrm{~Hz}$$. The phase difference between the two points in the path of a wave is $$\frac{\pi}{3}$$. The distance between those two points is (Velocity of sound in air $$=330 \mathrm{~m} / \mathrm{s}$$ )

A
1.1 m
B
0.6 m
C
2.2 m
D
1.7 m
MHT CET Subjects
EXAM MAP