Assertion (A): | If a glass slab is placed in front of one of the slits, then fringe width will decrease |
Reason (R): | Glass slab will produce an additional path difference |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion (A): | Crystalline solids can cause \(X\)-rays to diffract. |
Reason (R): | Interatomic distance in crystalline solids is of the order of \(0.1\) nm. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion (A): | Corpuscular theory fails in explaining the velocities of light in air and water. |
Reason (R): | According to corpuscular theory, light should travel faster in denser media than in rarer media. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion (A): | Diffraction is common in sound but not common in light waves. |
Reason (R): | The wavelength of light is more than the wavelength of sound. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
1. | \(\lambda.\) | fringe width is proportional to wavelength
2. | \(d.\) | fringe width is proportional to slit width
3. | \(D.\) | fringe width is inversely proportional to screen distance
4. | fringe width is proportional to the position of fringe from the central maximum. |
Column-I | Column-II | ||
a. | If \({\Delta x}={\lambda \over 3}\) | (p) | resultant intensity will be \(3I_0\) |
b. | If \(\phi = 60^{\circ}\) | (q) | resultant intensity will be \(I_0\) |
c. | If \({\Delta x}={\lambda \over 4}\) | (r) | resultant intensity will be zero |
d. | If \(\phi = 90^{\circ}\) | (s) | resultant intensity will be \(2I_0\) |
1. | a(q), b(p), c(s), d(s) |
2. | a(s), b(p), c(s), d(q) |
3. | a(q), b(s), c(s), d(p) |
4. | a(s), b(r), c(q), d(r) |
1. | \(\alpha>\beta\) |
2. | \(\beta>\alpha\) |
3. | \(\alpha=\beta\) |
4. | \(\alpha~\&~\beta \) cannot be predicted. | the relation between
1. | \(2 \pi\) | 2. | \(3 \pi\) |
3. | \(4 \pi\) | 4. | \( \pi \lambda\) |