MCQOPTIONS
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MCQOPTIONS
| 1. |
A fish is a little away below the surface of a lake. If the critical angle is 49°, then the fish could see things above the water surface within an angular range of \[{{\theta }^{o}}\] where [MP PMT 1986] |
| A. | \[\theta ={{49}^{o}}\] |
| B. | \[\theta ={{90}^{o}}\] |
| C. | \[\theta ={{98}^{o}}\] |
| D. | \[\theta =24\frac{{{1}^{o}}}{2}\] |
| Answer» D. \[\theta =24\frac{{{1}^{o}}}{2}\] | |