1
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A rod of length ' $l$ ' is rotated with angular velocity ' $\omega$ ' about its one end, perpendicular to a magnetic field of induction ' $B$ '. The e.m.f. induced in the rod is

A
$\mathrm{B} l^2 \omega$
B
$0.5 \mathrm{~B} l^2 \omega$
C
$B / \omega$
D
$0.5 \mathrm{~B} / \omega$
2
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A convex lens of focal length ' $f$ ' produces a real image whose size is ' $n$ ' times the size of an object. The distance of the object from the lens is

A
$\frac{\mathrm{n}+1}{\mathrm{nf}}$
B
$\mathrm{f}\left(1-\frac{1}{\mathrm{n}}\right)$
C
$\frac{\mathrm{nf}}{\mathrm{n}+1}$
D
$f\left(1+\frac{1}{n}\right)$
3
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A liquid drop of density ' $\rho$ ' is floating half immersed in a liquid of density ' $d$ '. If ' $T$ ' is the surface tension then the diameter of the liquid drop is ( $\mathrm{g}=$ acceleration due to gravity)

A
$\left[\frac{6 \mathrm{~T}}{g(2 p-d)}\right]^{\frac{1}{2}}$
B
$\left[\frac{8 \mathrm{~T}}{3 \mathrm{~g}(2 \rho-\mathrm{d})}\right]^{\frac{1}{2}}$
C
$\left[\frac{12 \mathrm{~T}}{\mathrm{~g}(2 \rho-\mathrm{d})}\right]^{\frac{1}{2}}$
D
$\left[\frac{3 T}{g(2 p-d)}\right]^{\frac{1}{2}}$
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When the electron orbiting in hydrogen atom in its ground state moves to the third excited state, the de-Broglie wavelength associated with it

A
becomes zero.
B
remains unchanged.
C
will decrease.
D
will increase.
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