Find the numerical aperture ‘θ’ if the MN = 6 cm, PR = 8 cm and the distance from the tip of the connector to the surface is 4 cm
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- 2.17 The critical angle for total internal reflection in a certain sub- stance is exactly 45 degrees. What is the Brewster angle for ex- ternal reflection?Identify which measurement this oscilloscope time difference reading is useful for. Oscilloscope-XSC1 Time 250.000 us 1.261 ms Channel_A 169.064 V 168.513 V -550. 584 mV Channel_B 89. 282 V 95.005 V 5.722 V Reverse T2-T1 1.011 ms Save Ext. trigger Timebase Scale: 200 us/Div : Scale: 100 V/Div X pos. (Div): 0 Channel A Channel B Scale: 100 V/Div Y pos. (Div): 0 Trigger Edge: F Level: 0 A B Ext Y pos. (Div): 0 V Y/T Add B/A A/B AC DC AC DC Single Normal O period O none of the above O phase shiftThe time/div and voltage/div axes of an oscilloscope have been erased. A student connects a 1 kHz, 5 V P-P square wave calibration pulse to channel-1 of the scope and observes the screen to be as shown in the upper trace of the figure. An unknown signal is connected to channel-2 (lower trace) of the scope. If the time/div and V/div on both channels are the same, the amplitude (p - p) and period of the unknown signal are respectively
- In Cathode Ray Oscilloscope (CRO),the screen size of transparent grid is a) 10 mm by 10 mm squares b) 10 cm by 10 cmsquares c)10 cm by 10 mm squares d) 10 cm by 10 cm squaresDetermine the value of a capacitor with a color code yellow, violet, orange, white and red. Determine the value of a resistor with a color code red, blue, orange and silver.Identify which measurement this oscilloscope time difference reading is useful for. Oscilloscope-XSC1 Channel_B Channel_A 169.064 V 113.590 V -55.474 V Time T1 Reverse 250.000 us 89.282 V 122.375 V 33.093 V T2 382.576 us T2-T1 132.576 us Save Ext. trigger Timebase Scale: 200 us/Div X pos. (Div): 0 Channel A Scale: 100 V/Div Y pos. (Div): 0 Channel B Trigger Scale: 100 V/Div Y pos. (Div): 0 Edge: f 2 AB Ext Level: Y/T Add B/A A/B AC0 DC AC0 DC Single Normal Auto None O none of the above O phase shift O period