Question
A periscope works on the principle of
Solution
Total internal reflection (TIR) is the phenomenon that involves the reflection of the entire incident light off the boundary. Glass prisms can be shaped to produce total internal reflection and as such are employed in binoculars, periscopes, telescopes, and other optical instruments. For the prism used in periscope, the light rays hitthe inside surface at ananglegreaterthanthecriticalangleof42and hence they are internally reflected.
A treaty signed by which of the following two countries for transfer of each other’s sentenced prisoners has come into effect with the ratification o...
National Sports Day is celebrated on which of the Following Day?
Which of these is a famous traditional craft of Himachal Pradesh?
Which state government launched a state level nutrition scheme for HIV positive children?
What is the primary focus of the Atal Pension Yojana (APY)?
The committee on whose recommendation Panchayati Raj was implemented in the country was headed by-
Consider the following events and arrange them in chronological order:
I. C.R. Rao, the eminent Statistician, passed away
II. Ustad Ali Za...
Inventory Turnover measures the relationship of inventory with:
______ has been appointed as the Director General of Narcotics Control Bureau (NCB)?
Which of the following statements is correct?
(i) The elevation of this mountain range is approximately 1000-1500 meters.
(ii) The climati...