MCQ
In Young's double slit experiment how many maximas can be obtained on a screen (including the central maximum) on both sides of the central fringe if λ = 2000 $A^0$ and d = 7000 $A^0$
- A12
- ✓7
- C18
- D4
✓
Answer
Correct option: B.
7
(b) 7
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
$A$ curren of $2\,A$ is increasing at $a$ rate of $4\, A/s$ through a coil of inductance $2\,H$. The energy stored in the inductor per unit time is....$J/s$
→$64$ drops each having the capacity $C$ and potential $V$ are combined to form a big drop. If the charge on the small drop is $q$, then the charge on the big drop will be
→A source simultaneously emitting light at two wavelengths $400 \,nm$ and $800 \,nm$ is used in the Young's double slit experiment. If the intensity of light at the slit for each wavelength is $I_{0}$, then the maximum intensity that can be observed at any poin on the screen is
→Which of the following semi-conductor diodes is reverse biased
One milliwatt of light of wavelength $4560\ Å$ is incident on a cesium surface of work function $1.9\ eV$. Given that quantum efficiency of photoelectric emission is $0.5\%$. Planck's constant $h = 6.62 × 10^{-34}\ J-s$, velocity of light $= 3 × 10^8\ ms^{-1}$, the corresponding photo electric current is
→Three rays of light, namely red (R), green (G) and blue (B) are incident on the face $PQ$ of a right angled prism PQR as shown in figure.
→The refractive indices of the material of the prism for red, green and blue wavelength are $1.27, 1.42$ and $1.49$ respectively. The colour of the ray(s) emerging out of the face $PR$ is:
In Circuit-$1$ and Circuit- $2$ shown in the figures, $R_1=1 \Omega, R_2=2 \Omega$ and $R_3=3 \Omega$. $P_1$ and $P_2$ are the power dissipations in Circuit-$1$ and Circuit-$2$ when the switches $S_1$ and $S_2$ are in open conditions, respectively. $Q_1$ and $Q_2$ are the power dissipations in Circuit-$1$ and Circuit-$2$ when the switches $S_1$ and $S_2$ are in closed conditions, respectively.
→Which of the following statement($s$) is(are) correct?
$(A)$ When a voltage source of $6 V$ is connected across $A$ and $B$ in both circuits, $P_1$
$(B)$ When a constant current source of $2 Amp$ is connected across $A$ and $B$ in both circuits, $P_1>P_2$.
$(C)$ When a voltage source of $6 V$ is connected across $A$ and $B$ in Circuit-$1$, $Q_1>P_1$.
$(D)$ When a constant current source of $2 Amp$ is connected across $A$ and $B$ in both circuits, $Q_2$
A charge is being induced to a sphere with the help of another charged sphere. The extent of induction increase if $........$?
→When a photon of light collides with a metal surface, number of electrons, (if any) coming out is
The length of a potentiometer wire is $\ell $. A cell of emf $E$ is balanced at a length $\ell /3$ from the positive end of the wire. If the length of the wire is increased by $\ell /2$ at what distance will the same cell give a balanced point
→