Question
Find the angle of deviation (given diagram)
✓
Answer
Deviation $(s)$
$=180^{\circ}-2 \mathrm{i}$
$=180^{\circ}-2\left(90^{\circ}-\theta\right)$
$=2 \theta$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Position of an ant ( $\mathrm{S}$ in metres) moving in $\mathrm{Y}-\mathrm{Z}$ plane is given by $S=2 t^2 \hat{j}+5 \hat{k}$ (where $t$ is in second). The magnitude and direction of velocity of the ant at $t=1 \mathrm{~s}$ will be :
→A car is moving with speed $30$ $m/\sec $ on a circular path of radius $500\, m$. Its speed is increasing at the rate of $2m/{\sec ^2},$ What is the acceleration of the car ........ $m/sec^2$
→$8$ mercury drops coalesce to form one mercury drop, the energy changes by a factor of
→A person carrying a whistle emitting continuously a note of $272 Hz$ is running towards a reflecting surface with a speed of $18\, km/hour. $ The speed of sound in air is $345m{s^{ - 1}}$. The number of beats heard by him is
→The above is a plot of binding energy per nucleon $E_b$, against the nuclear mass $M; A, B, C, D, E, F$ correspond to different nuclei. Consider four reactions
→$(i)\;A+B\;\to\; C \;+\;\varepsilon $
$(ii)\;C\;\to \;A\;+\;B\;+\;\varepsilon $
$(iii)\;D\;+\;E\;\to \; F\;+$$\;\varepsilon $
$(iv)\;F\;\to \; D\;+\;E\;+\;\varepsilon $
$\;\varepsilon $ is the energy released? In which reactions is $\;\varepsilon $ positive?
In the adjacent shown circuit, a voltmeter of internal resistance $R$, when connected across $B$ and $C$ reads $\frac{{100}}{3}\,V$. Neglecting the internal resistance of the battery, the value of $R$ is ................. $k \Omega$
→When Ultraviolet radiation of a certain frequency falls on a potassium target, the photo electrons released can be stopped completely by a retarding potential of $0.6 \,V$. If the frequency of the radiation is increased by $10 \%$, this stopping potential rises to $0.9 \,V$. The work function of potassium is ........ $eV$
→Assertion : Heavy water is a better moderator than normal water.
Reason : Heavy water absorbs neutrons more efficiently than normal water.
A wire has a resistance of $12\, ohm$. It is bent in the form of equilateral triangle. The effective resistance between any two corners of the triangle is
→An electron is moving in electric field and magnetic field it will gain energy from