A beam of light is incident on a perfectly smooth body of water. The angle that the REFLECTED ray makes with the normal is:

Q-1: A beam of light is incident on a perfectly smooth body of water. The angle that the REFLECTED ray makes with the normal is:

1) greater than
2) smaller than
3) the same as the angle the incident ray makes with the normal.
ANSWER: 3 -- THE SAME AS

Q-2:  A beam of light is incident on a large block of glass. The index of refraction of the glass is greater than one. Is the wavelength of the light in the glass:

1) longer than
2) shorter than
3) the same as the wavelength of the light in the air?
ANSWER: 2 -- SHORTER THAN

Q-3: The focal length of a concave mirror is 2 meters. An object is positioned 8 meters in front of the mirror. Is the image of this object real or virtual?

ANSWER: REAL

Q-4:  A converging thin lens has a focal length of 27 centimeters. An object is placed 9 centimeters from the lens. Is the image of the object real or virtual?

ANSWER: VIRTUAL

Q-5:  Light has wavelength, frequency, and speed. Which, if any, of these quantities remains unchanged when light passes from a vacuum into a block of glass?

ANSWER: FREQUENCY

Q-6:  Which of the following waves is not a transverse wave?

1) a wave traveling on a string
2) an electromagnetic wave
3) a sound wave
ANSWER: 3 -- A SOUND WAVE

Q-7:  Assume that a ray of light passes from glass into air at an angle of incidence greater than zero degrees. Will the ray of light be bent toward or away from the normal as it passes into the air?

ANSWER: AWAY FROM

Q-8: If one looks at a point P on the bottom of a swimming pool, one sees an image point P prime. Is the image point, P prime, a real or a virtual image?

ANSWER: VIRTUAL

Q-9:  A real image can be formed by which of the following single mirrors?

1) a plane mirror
2) a concave spherical mirror
3) a convex spherical mirror
ANSWER: 2 -- A CONCAVE SPHERICAL MIRROR

Q-10:  If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways?

1) average molecular velocity
2) total mass
3) total molecular kinetic energy
4) average momentum per molecule
ANSWER: 3 -- TOTAL MOLECULAR KINETIC ENERGY

Q-11:  The frequency of a wave is 2/10 Hertz. What is the period of thiswave?

ANSWER: 5 SECONDS