Answer the following question: In a single slit diffraction exper… - Vidyadip

Question

Answer the following question:
In a single slit diffraction experiment, the width of the slit is made double the original width. How does this affect the size and intensity of the central diffraction band?

✓

Answer

Width of central diffraction band $=2\text{D}\frac{\lambda}{\text{d}}.$
Where, d is the width of the slit.
So, on doubling the width of the slit, the size of the central diffraction band reduces to half value. But, the light amplitude becomes double, which increases the intensity four fold.

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 "2 Marks Questions" 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

Draw a sketch of a plane electromagnetic wave propagating along the z-direction. Depict clearly the directions of electric and magnetic fields varying sinusoidally with z.

Derive the equation of the magnetic field produced by a long solenoid.

In a photoelectric effect, the yellow light is just able to emit electrons, will green light emit photoelectrons? What about red light?

A current is induced in coil $C_1$ due to the motion of current carrying coil $C_2$. (a) Write any two ways by which a large deflection can be obtained in the galvanometer G. (b) Suggest an alternative device to demonstrate the induced current in place of a galvanometer.

Can a plane mirror ever form a real image?

Light from Balmer series of hydrogen is able to eject photoelectrons from a metal. What can be the maximum work function of the metal?

Explain the photoelectric effect when the radiation is incident on different metals?

Answer the following question:
You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain.

A straight wire carrying a current of $12 A$ is bent into a semi-circular arc of radius $2.0 cm$ as shown in Fig. 4.11 (a). Consider the magnetic field $B$ at the centre of the arc. (a) What is the magnetic field due to the straight segments? (b) In what way the contribution to $B$ from the semicircle differs from that of a circular loop and in what way does it resemble? (c) Would your answer be different if the wire were bent into a semi-circular arc of the same radius but in the opposite way as shown in Fig. 4.11(b)?

Write the mathematical relation between mobility and drift velocity of charge carriers in a conductor. Name the mobile charge carriers responsible for conduction of electric current in (i) an electrolyte (ii) an ionised gas.