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

If $\sqrt{A^2+B^2}$ represents the magnitude of resultant of two vectors $(\mathbf{A}+\mathbf{B})$ and $(\mathbf{A}-\mathbf{B})$, then the angle between two vectors is

A
$\cos ^{-1}\left[-\frac{2\left(A^2-B^2\right)}{\left(A^2+B^2\right)}\right]$
B
$\cos ^{-1}\left[-\frac{A^2-B^2}{A^2 B^2}\right]$
C
$\cos ^{-1}\left[-\frac{\left(A^2+B^2\right)}{2\left(A^2-B^2\right)}\right]$
D
$\cos ^{-1}\left[-\frac{\left(A^2-B^2\right)}{A^2+B^2}\right]$
2
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A thin metal wire of length 'L' and uniform linear mass density '$\rho$' is bent into a circular coil with 'O' as centre. the moment of inertia of a coil about the axis XX' is

MHT CET 2019 2nd May Morning Shift Physics - Rotational Motion Question 1 English

A
$\frac{3 \rho L^3}{8 \pi^2}$
B
$\frac{\rho L^3}{4 \pi^2}$
C
$\frac{3 \rho L^2}{4 \pi^2}$
D
$\frac{\rho L^3}{8 \pi^2}$
3
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The dimensions of torque are same as that of

A
moment of force
B
pressure.
C
acceleration
D
impulse
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

. For a transistor, the current ratio ' $\beta_{d c}$ ' is defined as the ratio of

A
collector current to emitter current.
B
collector current to base current.
C
base current to collector current.
D
emitter current to collector current.
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