A single-slit diffraction pattern is formed on a distant screen. Assuming the angles involved are small, by what factor will the width of the central bright spot on the screen change if the distance from the slit to the screen is doubled?
A)
It will be cut to one-quarter its original size.
B)
It will be cut in half.
C)
It will double.
D)
It will become four times as large.
E)
It will become eight times as large.
C
You might also like to view...
An ideal solenoid has a length of 25 mm. If the windings are compressed so that the length is reduced to 1?2 of its original length how does the inductance change?
A. 1?4 of original B. to 1?2 of original C. twice the original D. quadruple the original
A 2.0 kg mass is attached to the end of a horizontal spring (k = 50. N/m) and set into simple harmonic motion with an amplitude of 10. cm. What is the total mechanical energy of this system?
A) 0.02 J B) 25 J C) 0.25 J D) 1.00 J E) 2.5 J
In the Bohr theory the orbital radius depends upon the principal quantum number in what way?
A) n B) 1/n C) n2 D) 1/n2 E) n3
How long does it take for a train traveling 60.4 miles per hour to travel 81 miles?
A) 0.75 hours B) 0.745 hours C) 1.34 hours D) 1.3 hours E) 1 hour