Two slits are illuminated with green light (? = 540 nm). The slits are 0.05 mm apart and the distance to the screen is 1.5 m. At what distance (in mm) from the central maximum on the screen is the average intensity 50% of the intensity of the central maximum?
A. 1
B. 3
C. 2
D. 4
E. 0.4
Answer: D
You might also like to view...
The internal energy of a system increases by 500 J while 610 J of work are performed on it. What was the heat flow into or out of the system?
A. -1110 J B. 1110 J C. -110 J D. 110 J
Solenoid #1 has 100 turns and is 10.0 cm long. Solenoid #2 has 200 turns and is 20.0 cm long. If a current of 0.50 A is carried by #1, what current must #2 carry so that it would produce a magnetic field at its center equal to that in #1?
1.0.25 A 2.0.50 A 3.1.00 A 4.4.00 A
In an isovolumetric process where the pressure increases, are the heat absorbed, work done by the system, and the change in internal energy of the system positive, negative, or zero?
a. Q is +, W is +, and DU is +. c. Q is +, W is 0, and DU is +. b. Q is +, W is –, and DU is 0. d. Q is –, W is 0, and DU is –.
The crust of Mars is believed to ____ than Earth's
a. be much thinner b. be younger c. contain more water d. be more geologically active e. be much stronger