1
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A solid sphere rolls down from top of inclined plane, 7 m high, without slipping. Its linear speed at the foot of plane is $\left(g=10 \mathrm{~m} / \mathrm{s}^2\right)$

A
$\sqrt{70} \mathrm{~m} / \mathrm{s}$
B
$\sqrt{\frac{140}{3}} \mathrm{~m} / \mathrm{s}$
C
$\sqrt{\frac{280}{3}} \mathrm{~m} / \mathrm{s}$
D
$\sqrt{100} \mathrm{~m} / \mathrm{s}$
2
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body of mass $m$ is performing a UCM in a circle of radius $r$ with speed $v$. The work done by the centripetal force in moving it through $\left(\frac{2}{3}\right) \mathrm{rd}$ of the circular path is

A
zero
B
$m v^2 \pi r$
C
$\frac{2 \pi m v^2 r}{3}$
D
$\frac{2 m v^2 \pi}{3}$
3
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is the dimensional formula for electric polarisation?

A
$\left[M^P L^{-2} T^1 I^1\right]$
B
$\left[M^{-1} L^{-2} T^1 I^{-1}\right]$
C
$\left[M^P L^{-1} T^{-1} I^1\right]$
D
$\left[M^1 L^{-2} T^1 I^1\right]$
4
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The phenomenon of interference is based on

A
conservation of momentum
B
quantum nature of light
C
conservation of energy
D
conservation of charge
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