1
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A uniform rope of length $$12 \mathrm{~m}$$ and mass $$6 \mathrm{~kg}$$ hangs vertically from the rigid support. A block of mass $$2 \mathrm{~kg}$$ is attached to the free end of the rope. A transverse pulse of wavelength $$0.06 \mathrm{~m}$$ is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is

A
$$0.8 \mathrm{~m}$$
B
$$0.16 \mathrm{~m}$$
C
$$0.12 \mathrm{~m}$$
D
$$0.4 \mathrm{~m}$$
2
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the effect of pressure on the speed of sound in a medium, if pressure is doubled at constant temperature?

A
Remains same
B
Reduced to half
C
Gets doubled
D
Becomes 4 times
3
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two sound waves having wavelengths $$5.0 \mathrm{~m}$$ and $$5.5 \mathrm{~m}$$ propagates in a gas with velocity 300 $$\mathrm{m} / \mathrm{s}$$. The number of heats produced per second is

A
six
B
two
C
three
D
one
4
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The frequency of a tuning fork is $$220 \mathrm{~Hz}$$ and the velocity of sound in air is $$330 \mathrm{~m} / \mathrm{s}$$. When the tuning fork completes 80 vibrations, the distance travelled by the

A
120 m
B
60 m
C
53 m
D
100 m
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