Assertion : No interference pattern is detected when two coherent… - Vidyadip

Question

Assertion : No interference pattern is detected when two coherent sources are infinitely close to each other.

Reason : The fringe width is inversely proportional to the distance between the two slits.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

✓

Answer

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

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

When the energy of the incident radiation is increased by 20%, the kinetic energy of the photoelectrons emitted from a metal surface increased from 0.5eV to 0.8eV. The work function of the metal is?

Assertion : A charged capacitor is disconnected from a battery. Now if its plate are separated farther, the potential energy will fall.

Reason : Energy stored in a capacitor is equal to the work done in charging it.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If assertion is false but reason is true.

In electrolytes, the mobile charges are:

The time taken by sunlight to cross a 5 mm thick glass plate (μ = 3/2) is

(a) 0.25

(b) 0.167

(c) 2.5

(d) 1.0

The electrical conductivity of pure germanium can be increased by:

Increasing the temperature.
Doping acceptor impurities.
Doping donor impurities.
Irradiating ultraviolet light on it.

Constantan wire is used in making standard resistances because its

(a) Specific resistance is low

(b) Density is high

(c) Temperature coefficient of resistance is negligible

(d) Melting point is high

A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointing in the same direction

(a) The electron will turn to its right

(b) The electron will turn to its left

(c) The electron velocity will increase in magnitude

(d) The electron velocity will decrease in magnitude

What conclusion is drawn regarding the magnetic field at a point if a compass needle at that point rests in any direction?

The minimum distance between an object and its real image formed by a convex lens is

(a) 1.5 f

(b) 2 f

(c) 2.5 f

(d) 4 f

The difference between the mass of a nucleus and the total mass of the constituents is its.