The term stimulated emission would be used in explaining the operation of
a. an electron microscope.
b. an X-ray tube.
c. a microwave oven.
d. a laser.
d
You might also like to view...
Pour two liters of water at 40°C into one liter of water at 20°C and the final temperature of the two becomes
A) less than 30°C. B) at or about 30°C. C) more than 30°C.
Radio maps of the spiral arms of our galaxy Group of
a.They map the location of dense neutral hydrogen clouds b.They map the location of hot O and B stars by the radio radiation they emit c.They reveal that the Sun is currently located in the centre of a spiral arm d.They reveal that our galaxy is a grand design spiral
What are the restrictions on Stefan’s law?
What will be an ideal response?
Standing Sound Waves: A pipe that is 0.92 m long and open at both ends vibrates in the second overtone with a frequency of 584 Hz. What is the speed of sound in the air in this pipe?
A. 358 m/s B. 349 m/s C. 353 m/s D. 344 m/s E. 363 m/s