1
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In air, a charged soap bubble of radius ' $R$ ' breaks into 27 small soap bubbles of equal radius ' $r$ '. Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

A
$\frac{1}{81}$
B
$\frac{3}{1}$
C
$\frac{1}{3}$
D
$\frac{9}{1}$
2
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two parallel conductors carrying unequal currents in the same direction ............

A
neither attract nor repel each other
B
repel each other
C
attract each other
D
will have rotational motion.
3
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A layer of atmosphere that reflects medium frequency radio waves which is ineffective during night, is

A
F-layer
B
E-layer
C
stratosphere
D
thermosphere
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A transverse wave is propagating on the string. The linear density of a vibrating string is $10^{-3} \mathrm{~kg} / \mathrm{m}$. The equation of the wave is $Y=0.05 \sin (x+15 t)$ where $x$ and $Y$ are measured in metre and time in second. The tension force in the string is

A
0.2 N
B
0.250 N
C
0.225 N
D
0.325 N
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