If the wavelength of light in vacuum is 469 nm, what is the wavelength of light in a thin film of index of refraction 1.42?
A) 110 nm
B) 220 nm
C) 330 nm
D) 440 nm
E) 550 nm
C
You might also like to view...
Pressure: A 100-kg person sits on a 5-kg bicycle. The total weight is borne equally by the two wheels of the bicycle. The tires are 2.0 cm wide and are inflated to a gauge pressure of 8.0 × 105 Pa. What length of each tire is in contact with the ground?
A. 1.6 cm B. 1.8 cm C. 3.2 cm D. 2.4 cm E. 6.4 cm
Why do we feel type O and B stars are poor candidates for extraterrestrial life?
A) They do not have a habitable Zone. B) They don't produce enough yellow light. C) Their lifetime is too short. D) They don't produce a planetary system. E) Their habitable zone lies too close to the star.
Faraday's Law: As shown in the figure, a wire and a 10-? resistor are used to form a circuit in the shape of a square with dimensions 20 cm by 20 cm. A uniform but non-steady magnetic field is directed into the plane of the circuit. The magnitude of the magnetic field is steadily decreased from 2.70 T to 0.90 T in a time interval of 96 ms. What is the induced current in the circuit, and what is its direction through the resistor?
A. 75 mA, from b to a B. 45 mA, from b to a C. 75 mA, from a to b D. 45 mA, from a to b E. 110 mA, from a to b
Roughly what percentage of the mass-energy of in-falling matter can be converted to other forms of energy as the matter falls into a black hole?
A) 0.7% B) 1-4% C) 10-40% D) 100%