1.

 What are the differences between a real image and a

virtual image?

2.

What happens to a ray of light when it travels from a rarer medium to a denser medium?

3.

What are the characteristics of an image formed by a plane mirror?

4.

The phenomenon by which the incident light falling on a surface is sent back into the same medium is known as ________.

a)Polarizationb)Reflectionc)Refractiond)absorption

5.

•  According to the Law of Reflection,

• a) i =  r• b) i >  r• c) r >  I• d) i ≠ r

6.

• The focus of a concave mirror is________.

• a)real• b)virtual• c)undefined• d)at the pole

7.

• A converging mirror is known as________.

a)convex mirrorb)plane mirrorc)concave mirrord)cylindrical mirror

8.

• An image formed by a convex mirror is always ________.

a)virtual, erect and diminishedb)virtual, real and magnifiedc)real, inverted and diminishedd)real, erect and magnified

9.

•   What is the angle between the incident and reflected rays when a ray of light is incident normally on a plane mirror?

a)90o

b)45o

c)180o

d)0

10.

• The focal length of a concave mirror is 15 cm. What is its radius of curvature?

a)15 cmb)30 cmc)7.5 cmd)45 cm

11.

•  When an object is placed at the focus of a concave mirror, the image will be formed at ________.

a)infinityb)focusc)centre of curvatured)pole

12.

•  A reflection of a surface that is not smooth is called a   a)   diffuse reflection   b)  sharp reflection   c)  total internal reflection

13.

• The perpendicular to where light hits a substance is called   a)  the index of reflection  b)   the angle of refraction  c)  the normal

14.

• Suppose you stand 1.6 m in front of a plane mirror. How far away from you is your image?

a. 1.6 m.b. 0 m.c. 1 m.d. 3.2 m.e. 4 m.

15.• The critical angle for a light from the bottom of

a swimming pool shining upward toward the pool's surface is the angle

a.where light is refracted so it just skims the pool surface.

b.43 degrees.c.at which all light is refracted out of the pool.d.42 degrees.e.at which some light is reflected from the

surface.

16.

• The explanation for a filled root beer mug looking fuller than it is involves

a. refraction.b. reflection.c. bothd. neither