Download App

Model Paper 3 — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETModel Paper 34 Marks
MCQ
The electromagnetic wave travelling in a medium has relative permeability 1.3 and relative permittivity 2.14. The speed of EM wave in that medium will be
  • A
    $13.6 \times 10^6 m / s$
  • B
    $1.8 \times 10^6 m / s$
  • C
    $3.6 \times 10^8 m / s$
  • ✓
    $1.8 \times 10^8 m / s$
✓

Answer

Correct option: D.
$1.8 \times 10^8 m / s$
(D) $1.8 \times 10^8 m / s$
$v=\frac{c}{\sqrt{\mu_0 \varepsilon_0}}=\frac{3 \times 10^8}{\sqrt{1.3 \times 2.14}}=1.8 \times 10^8 m / s$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "SECTION - A [PHYSICS - MCQ]" from Model Paper 3→Model Paper 3 — all question types→NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A concave mirror gives an image three times as large as the object placed at a distance of $20cm$ from it. For the image to be real, the focal length should be......$cm$
→
The distance of a particle moving on a circle of radius $12 \,m$ measured from a fixed point on the circle and measured along the circle is given by $s=2 t^3$ (in meters). The ratio of its tangential to centripetal acceleration at $t=2 \,s$ is .........
→
A compound microscope has a magnifying power $30$. The focal length of its eyepiece is $5\,cm$. Assuming the final image to be at the least distance of distinct vision $(25\, cm)$. The magnification produced by objective is
→
$A$ battery of $\mathrm{emf}$ $E$ and internal resistance $r$ is connected across a resistance $R$. Resistance $R$ can be adjusted to any value greater than or equal to zero. Agraph is plotted between the current $(i)$ passing through the resistance and potential difference $(V) $ across it. Select the correct alternative $(s)$.
→
Abeam of unpolarised light of intensity $I_0$ is passed through a polaroid $A$ and then through another polaroid $B$ which is oriented so that its principal plane makes an angle of $45^{\circ}$ relative to that of $A$. The intensity of emergent light is :
→
A wave motion has the function $y = {a_0}\sin (\omega \,t - kx)$. The graph in figure shows how the displacement $y$ at a fixed point varies with time $t$. Which one of the labelled points shows a displacement equal to that at the position $x = \frac{\pi }{{2k}}$ at time $t = 0$
→
The $r.m.s.$ current in an ac circuit is $2 A$. If the wattless current be $\sqrt 3 A$, what is the power factor
→
The initial activity of a certain radioactive isotope was measured as $16000\ counts\  min^{-1}$. Given that the only activity measured was due to this isotope and that its activity after $12\, h$ was $2000\ counts\ min^{-1}$, its half-life, in hours, is nearest to
→
A particle is moving eastwards with a speed of $6 \,m / s$. After $6 \,s$, the particle is found to be moving with same speed in a direction $60^{\circ}$ north of east. The magnitude of average acceleration in this interval of time is ....... $m / s ^2$
→
 The figure shows a velocity-time graph of a particle moving along a straight line. The particle comes to rest at $t=$ ....... $\sec$
→