Class 11th Physics Physics Motion in Plane Projectile Motion

Two transparent media A and B are separated by a plane boundary. The speed of light in those media are $1.5 * 10^{8} m / s$ and $2.0 * 10^{8} m / s$ , respectively. The critical angle for a ray of light for these two media is

Option 1 - <p><span class="mathml" contenteditable="false"> <math> <msup> <mrow> <mrow> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">i</mi> <mi mathvariant="normal">n</mi> </mrow> </mrow> <mrow> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mrow> </msup> <mo>⁡</mo> <mo>(</mo> <mn>0.500</mn> <mo>)</mo> </math> </span></p>

Option 2 - <p><span class="mathml" contenteditable="false"> <math> <msup> <mrow> <mrow> <mi mathvariant="normal">s</mi> <mi mathvariant="normal">i</mi> <mi mathvariant="normal">n</mi> </mrow> </mrow> <mrow> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mrow> </msup> <mo>⁡</mo> <mo>(</mo> <mn>0.750</mn> <mo>)</mo> </math> </span></p>

Option 3 - <p><span class="mathml" contenteditable="false"> <math> <msup> <mrow> <mrow> <mi mathvariant="normal">t</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">n</mi> </mrow> </mrow> <mrow> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mrow> </msup> <mo>⁡</mo> <mo>(</mo> <mn>0.500</mn> <mo>)</mo> </math> </span></p>

Option 4 - <p><span class="mathml" contenteditable="false"> <math> <msup> <mrow> <mrow> <mi mathvariant="normal">t</mi> <mi mathvariant="normal">a</mi> <mi mathvariant="normal">n</mi> </mrow> </mrow> <mrow> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </mrow> </msup> <mo>⁡</mo> <mo>(</mo> <mn>0.750</mn> <mo>)</mo> </math> </span></p>

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Answered by

Raj Pandey | Contributor-Level 9

5 months ago

Correct Option - 2

Detailed Solution:

$i_{c} = {s i n}^{- 1} ? (\frac{3}{4})$

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A ball is projected from ground at angle q with the horizontal. After t = 1 s, it is moving at 45° with the horizontal and after t = 2 second, it is moving horizontally. What is speed of projection of ball? [g = 10 m s^–2]

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A particle of mass m is projected with speed v at an angle of 30° with the horizontal, find its angular momentum about point of projection when it reaches its maximum height.

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$y = α x - β x^{2}$

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