In a single slit diffraction experiment first minimum for red lig… - Vidyadip

Question

In a single slit diffraction experiment first minimum for red light (660 nm) coincides with first maximum of some other wavelength l'. The value of l' is (a) 4400 Å(b) 6600 Å(c) 2000 Å(d) 3500 Å

✓

Answer

(a) 4400 Å

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If we double the radius of a coil keeping the current through it unchanged, then the magnetic field at any point at a large distance from the centre becomes approximately:

Condenser A has a capacity of 15μF when it is filled with a medium of dielectric constant 15. Another condenser B has a capacity of 1 μF with air between the plates. Both are charged separately by a battery of 100 V. After charging, both are connected in parallel without the battery and the dielectric medium being removed. The common potential now is (a) 400 V (b) 800 V(c) 1200 V(d) 1600 V

The phenomenon utilised in an optical fibre is(a) Refraction(b) Interference(c) Polarization(d) Total internal reflection

Water rises in a vertical capillary tube upto a length of 10cm. If the tube is inclined at 45°, the length of water risen in the tube will be:

$10\text{cm}$
$10\sqrt{2}\text{cm}$
$\frac{10}{\sqrt{2}}\text{cm}$
None of these.

Electroplating does not help in(a) Fine finish to the surface(b) Shining appearance(c) Metals to become hard(d) Protect metal against corrosion

In a mean life of a radioactive sample(a) About 1/3 of substance disintegrates(b) About 2/3 of the substance disintegrates(c) About 90% of the substance disintegrates(d) Almost all the substance disintegrates

One microgram of matter converted into energy will give

A condenser has a capacity $2\mu F$ and is charged to a voltage of $50\ V.$ The energy stored is

A very small magnet is placed in the magnetic meridian with its south pole pointing north. The null point is obtained $20 \ cm$ away from the centre of the magnet. If the earth's magnetic field $($horizontal component$)$ at this point be $0.3$ gauss, the magnetic moment of the magnet is

Which of the following transition will have highest emission wavelength(a) n = 2 to n = 1 (b) n = 1 to n = 2 (c) n = 2 to n= 5 (d) n = 5 to n = 2