A passenger is sitting in a train which is moving fast. The engine blows a whistle of frequency ' n '. If the apparent frequency of sound heard by the passenger is $n^1$ then
$\mathrm{n}^1 \leq \mathrm{n}$
n $^1<$ n
$n^1>n$
$n^1=n$
If the shape of the liquid surface is curved, then the
pressure on the convex side is equal to the atmospheric pressure.
pressure on the convex side is equal to the pressure on the concave side.
pressure on the concave side is greater than that on the convex side.
pressure on the concave side is lesser than that on the convex side.
' n ' polarising sheets are arranged such that each makes an angle $45^{\circ}$ with the proceeding sheet. An unpolarised light of intensity I is incident into this arrangement. The output intensity is I/ 64 . The value of $n$ will be $\left(\cos 45^{\circ}=1 / \sqrt{2}\right)$
6
5
4
8
An alternating voltage $\mathrm{V}=100 \sqrt{2} \sin (50 \mathrm{t})$ is connected to $2 \mu \mathrm{~F}$ capacitor through a.c. ammeter. The reading of the ammeter is
20 mA
2 mA
10 mA
0.2 mA
MHT CET (Biology) Papers
All year-wise previous year question papers