Download App

Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
What will be the angle of diffracting for the first minimum due to Fraunhoffer diffraction with sources of light of wave length 550 nm and slit of width 0.55 mm
  • ✓
    0.001 rad
  • B
    0.01 rad
  • C
    1 rad
  • D
     0.1 rad
✓

Answer

Correct option: A.
0.001 rad
0.001 rad

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 "M.C.Q (1 Marks)" from Wave Optics→Wave Optics — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Light wave traveling in air along $x$-direction is given by $E _{ y }=540 \sin \pi \times 10^{4}( x - ct ) Vm ^{-1}$. Then, the peak value of magnetic field of wave will be $\dots \times 10^{-7}\,T$ (Given $c =3 \times 10^{8}\,ms ^{-1}$ )
→
For a chosen non$-$zero value of voltage, there can be more than one value of current in:
→
One face of a rectangular glass plate $6 \,cm$ thick is silvered. An object held $8\, cm$ in front of the first face, forms an image $12\, cm$ behind the silvered face. The refractive index of the glass is
→
There are three resistance coils of equal resistance. The maximum number of resistances you can obtain by connecting them in any manner you choose, being free to use any number of the coils in any way is
→
A transformer has $100$ turns in the primary coil and carries $8 \,A$ current. If input power is one kilowatt, the number of turns required in the secondary coil to have $500\,V$ output will be
→
When a certain length of wire is turned into one circular loop, the magnetic induction at the centre of coil due to some current flowing is ${B_1}$ If the same wire is turned into three loops to make a circular coil, the magnetic induction at the center of this coil for the same current will be
→
Experimentally it is found that $12.8\,eV$ energy is required to separate a hydrogen atom into a proton and an electron. So the orbital radius of the electron in a hydrogen atom is $\frac{9}{ x } \times 10^{-10}\,m$. The value of the $x$ is $\left(1\,eV =1.6 \times 10^{-19}\,J , \frac{1}{4 \pi \in_0}=9 \times 10^9\,Nm ^2 / C ^2\right.$ and electronic charge $=1.6 \times 10^{-19}\,J\,C$ )
→
Cut off potentials for a metal in photoelectric effect for light of wavelength $\lambda_1$, $\lambda_2$ and $\lambda_3$ is found to be $V_1$, $V_2$ and $V_3$ volts if $V_1$, $V_2$ and $V_3$ are in Arithmetic Progression and $\lambda_1$, $\lambda_2$ and $\lambda_3$ will be:
→
An electric wire of length ‘$I$’ and area of cross-section $a$ has a resistance $R\, ohms$. Another wire of the same material having same length and area of cross-section $4a$ has a resistance of
→
The $e.m.f.$ of a standard cell balances across $150\, cm$ length of a wire of potentiometer. When a resistance of $2\,\Omega $ is connected as a shunt with the cell, the balance point is obtained at $100\,cm$. The internal resistance of the cell is .............. $\Omega $
→