Refraction through a Glass Slab, and Total Internal Reflection
Ray Optics

282204 An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is \(12 \mathrm{~cm}\). When viewed from the opposite side, the apparent distance of the bubble is observed as \(4 \mathrm{~cm}\). If the side of the ice cube is \(24 \mathrm{~cm}\), the refractive index of the ice cube is

1 \(\frac{4}{3}\)
2 \(\frac{3}{2}\)
3 \(\frac{2}{3}\)
4 \(\frac{6}{5}\)
Ray Optics

282205 The critical angle for a denser-rarer interface is \(45^{\circ}\). The speed of light in rarer medium is \(3 \times\) \(10^8 \mathrm{~m} / \mathrm{s}\). The speed of light in the denser medium is:

1 \(5 \times 10^7 \mathrm{~m} / \mathrm{s}\)
2 \(2.12 \times 10^8 \mathrm{~m} / \mathrm{s}\)
3 \(3.12 \times 10^7 \mathrm{~m} / \mathrm{s}\)
4 \(\sqrt{2} \times 10^8 \mathrm{~m} / \mathrm{s}\)
Ray Optics

282216 A tank is filled with water to a height of \(16 \mathrm{~cm}\). Find the apparent depth of a needle lying at the bottom of the tank is measured by a microscope. Refractive index of water \(\left(\mu_w\right)\) is \(4 / 3\).

1 \(9.4 \mathrm{~cm}\)
2 \(12.0 \mathrm{~cm}\)
3 \(10.6 \mathrm{~cm}\)
4 \(8.0 \mathrm{~cm}\)
Ray Optics

282206 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: The phase difference of two light waves change if they travel through different media having same thickness, but different indices of refraction.
Reason R: The wavelengths of waves are different in different media.
In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct but \(\mathrm{R}\) is NOT the correct explanation of \(\mathrm{A}\)
2 \(\mathrm{A}\) is correct but \(\mathrm{R}\) is not correct
3 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct and \(\mathrm{R}\) is the correct explanation of \(\mathrm{A}\)
4 \(\mathrm{A}\) is not correct but \(\mathrm{R}\) is correct
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
Ray Optics

282204 An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is \(12 \mathrm{~cm}\). When viewed from the opposite side, the apparent distance of the bubble is observed as \(4 \mathrm{~cm}\). If the side of the ice cube is \(24 \mathrm{~cm}\), the refractive index of the ice cube is

1 \(\frac{4}{3}\)
2 \(\frac{3}{2}\)
3 \(\frac{2}{3}\)
4 \(\frac{6}{5}\)
Ray Optics

282205 The critical angle for a denser-rarer interface is \(45^{\circ}\). The speed of light in rarer medium is \(3 \times\) \(10^8 \mathrm{~m} / \mathrm{s}\). The speed of light in the denser medium is:

1 \(5 \times 10^7 \mathrm{~m} / \mathrm{s}\)
2 \(2.12 \times 10^8 \mathrm{~m} / \mathrm{s}\)
3 \(3.12 \times 10^7 \mathrm{~m} / \mathrm{s}\)
4 \(\sqrt{2} \times 10^8 \mathrm{~m} / \mathrm{s}\)
Ray Optics

282216 A tank is filled with water to a height of \(16 \mathrm{~cm}\). Find the apparent depth of a needle lying at the bottom of the tank is measured by a microscope. Refractive index of water \(\left(\mu_w\right)\) is \(4 / 3\).

1 \(9.4 \mathrm{~cm}\)
2 \(12.0 \mathrm{~cm}\)
3 \(10.6 \mathrm{~cm}\)
4 \(8.0 \mathrm{~cm}\)
Ray Optics

282206 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: The phase difference of two light waves change if they travel through different media having same thickness, but different indices of refraction.
Reason R: The wavelengths of waves are different in different media.
In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct but \(\mathrm{R}\) is NOT the correct explanation of \(\mathrm{A}\)
2 \(\mathrm{A}\) is correct but \(\mathrm{R}\) is not correct
3 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct and \(\mathrm{R}\) is the correct explanation of \(\mathrm{A}\)
4 \(\mathrm{A}\) is not correct but \(\mathrm{R}\) is correct
Ray Optics

282204 An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is \(12 \mathrm{~cm}\). When viewed from the opposite side, the apparent distance of the bubble is observed as \(4 \mathrm{~cm}\). If the side of the ice cube is \(24 \mathrm{~cm}\), the refractive index of the ice cube is

1 \(\frac{4}{3}\)
2 \(\frac{3}{2}\)
3 \(\frac{2}{3}\)
4 \(\frac{6}{5}\)
Ray Optics

282205 The critical angle for a denser-rarer interface is \(45^{\circ}\). The speed of light in rarer medium is \(3 \times\) \(10^8 \mathrm{~m} / \mathrm{s}\). The speed of light in the denser medium is:

1 \(5 \times 10^7 \mathrm{~m} / \mathrm{s}\)
2 \(2.12 \times 10^8 \mathrm{~m} / \mathrm{s}\)
3 \(3.12 \times 10^7 \mathrm{~m} / \mathrm{s}\)
4 \(\sqrt{2} \times 10^8 \mathrm{~m} / \mathrm{s}\)
Ray Optics

282216 A tank is filled with water to a height of \(16 \mathrm{~cm}\). Find the apparent depth of a needle lying at the bottom of the tank is measured by a microscope. Refractive index of water \(\left(\mu_w\right)\) is \(4 / 3\).

1 \(9.4 \mathrm{~cm}\)
2 \(12.0 \mathrm{~cm}\)
3 \(10.6 \mathrm{~cm}\)
4 \(8.0 \mathrm{~cm}\)
Ray Optics

282206 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: The phase difference of two light waves change if they travel through different media having same thickness, but different indices of refraction.
Reason R: The wavelengths of waves are different in different media.
In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct but \(\mathrm{R}\) is NOT the correct explanation of \(\mathrm{A}\)
2 \(\mathrm{A}\) is correct but \(\mathrm{R}\) is not correct
3 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct and \(\mathrm{R}\) is the correct explanation of \(\mathrm{A}\)
4 \(\mathrm{A}\) is not correct but \(\mathrm{R}\) is correct
Ray Optics

282204 An ice cube has a bubble inside. When viewed from one side the apparent distance of the bubble is \(12 \mathrm{~cm}\). When viewed from the opposite side, the apparent distance of the bubble is observed as \(4 \mathrm{~cm}\). If the side of the ice cube is \(24 \mathrm{~cm}\), the refractive index of the ice cube is

1 \(\frac{4}{3}\)
2 \(\frac{3}{2}\)
3 \(\frac{2}{3}\)
4 \(\frac{6}{5}\)
Ray Optics

282205 The critical angle for a denser-rarer interface is \(45^{\circ}\). The speed of light in rarer medium is \(3 \times\) \(10^8 \mathrm{~m} / \mathrm{s}\). The speed of light in the denser medium is:

1 \(5 \times 10^7 \mathrm{~m} / \mathrm{s}\)
2 \(2.12 \times 10^8 \mathrm{~m} / \mathrm{s}\)
3 \(3.12 \times 10^7 \mathrm{~m} / \mathrm{s}\)
4 \(\sqrt{2} \times 10^8 \mathrm{~m} / \mathrm{s}\)
Ray Optics

282216 A tank is filled with water to a height of \(16 \mathrm{~cm}\). Find the apparent depth of a needle lying at the bottom of the tank is measured by a microscope. Refractive index of water \(\left(\mu_w\right)\) is \(4 / 3\).

1 \(9.4 \mathrm{~cm}\)
2 \(12.0 \mathrm{~cm}\)
3 \(10.6 \mathrm{~cm}\)
4 \(8.0 \mathrm{~cm}\)
Ray Optics

282206 Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(\mathbf{R}\)
Assertion A: The phase difference of two light waves change if they travel through different media having same thickness, but different indices of refraction.
Reason R: The wavelengths of waves are different in different media.
In the light of the above statements, choose the most appropriate answer from the options given below.

1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct but \(\mathrm{R}\) is NOT the correct explanation of \(\mathrm{A}\)
2 \(\mathrm{A}\) is correct but \(\mathrm{R}\) is not correct
3 Both \(\mathrm{A}\) and \(\mathrm{R}\) are correct and \(\mathrm{R}\) is the correct explanation of \(\mathrm{A}\)
4 \(\mathrm{A}\) is not correct but \(\mathrm{R}\) is correct