MHT CET 2020 19th October Evening Shift | MHT CET Year Wise Previous Years Questions

A bob of a simple pendulum has mass $m$ and is oscillating with an amplitude $a$. If the length of the pendulum is $L$, then the maximum tension in the string is $\left[\cos 0^{\circ}=1\right.$, $g=$ acceleration due to gravity]

$m g\left[1+\left(\frac{a}{L}\right)^2\right]$

$m g\left[1-\left(\frac{L}{a}\right)^2\right]$

$m g\left[1+\left(\frac{L}{a}\right)^2\right]$

$m g\left[1-\left(\frac{a}{L}\right)^2\right]$

MHT CET 2020 19th October Evening Shift

MCQ (Single Correct Answer)

-0

The Brewster's angle for the glass-air interface is $(54.74)^{\circ}$. If a ray of light passing from air to glass strickes at an angle of incidence $45^{\circ}$, then the angle of refraction is

$$\left[\tan (54.74)^{\circ}=\sqrt{2}, \sin 45=\frac{1}{\sqrt{2}}\right]$$

$\sin ^{-1}(\sqrt{2})$

$\sin ^{-1}(1)$

$\sin ^{-1}(05)$

$\sin ^{-1}\left(\frac{1}{\sqrt{2}}\right)$

MHT CET 2020 19th October Evening Shift

MCQ (Single Correct Answer)

-0

For a paramagnetic substance, the magnetic susceptibility is

large and negative

small and positive

large and positive