1
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two wires of same material of radius 'r' and '2r' respectively are welded together end to end. The combination is then used as a sonometer wire under tension 'T'. The joint is kept midway between the two bridges. The ratio of the number of loops formed in the wires such that the joint is a node is

A
1 : 5
B
1 : 2
C
1 : 4
D
1 : 3
2
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The frequency of a tuning fork is 'n' Hz and velocity of sound in air is 'V' m/s. When the tuning fork completes 'x' vibrations, the distance travelled by the wave is

A
$$\mathrm{\frac{V}{xn}}$$
B
$$\mathrm{\frac{Vn}{x}}$$
C
$$\mathrm{\frac{xV}{n}}$$
D
$$\mathrm{\frac{x}{Vn}}$$
3
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two waves $$Y_1=0.25 \sin 316 t$$ and $$Y_2=0.25 \sin 310 t$$ are propagating along the same direction. The number of beats produced per second are

A
$$\frac{\pi}{2}$$
B
$$\frac{2}{\pi}$$
C
$$\frac{3}{\pi}$$
D
$$\frac{\pi}{3}$$
4
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two identical strings of length $$l$$ and $$2l$$ vibrate with fundamental frequencies $$\mathrm{N} \mathrm{~Hz}$$ and $$1.5 N$$ Hz, respectively. The ratio of tensions for smaller length to large length is

A
$$1: 3$$
B
$$1: 9$$
C
$$3: 1$$
D
$$9: 1$$
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