A wave is travelling in the negative x direction having displacement 3 cm along Y direction, wavelength $2 \pi \mathrm{~m}$ and frequency $\left(\frac{1}{2 \pi}\right) \mathrm{Hz}$ is represented as ( $t=$ time)
$3 \sin (\mathrm{x}+\mathrm{t}) \mathrm{m}$
$3 \times 10^{-2} \sin (x+t) m$
$3 \sin (x+2 t) m$
$3 \times 10^{-3} \sin (x+2 t) \mathrm{m}$
A straight wire of mass ' M ' and length 2 m is placed in a magnetic field of 2 T which is acting perpendicular to the length of the wire. When a current of 1 A flows through the wire, the wire experiences an upthrust and leviates in a magnetic field. The mass ' $M$ ' of the wire is (acceleration due to gravity $\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ )
0.4 gram
40 gram
400 gram
0.04 gram
A photon and an electron have equal energy ' $E$ '. The ratio of wavelength of photon to wavelength of electron is proportional to
$\frac{1}{\mathrm{E}}$
$\sqrt{E}$
E
$\frac{1}{\sqrt{\mathrm{E}}}$
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
$n^1>n$
$n^1=n$
MHT CET (Biology) Papers
All year-wise previous year question papers