Light: Reflection and Refraction (Plane mirror)

Which of the following characteristics are correct for the image formed in a plane mirror?

I. Upright

II. Inverted

III. Real

IV. Same size as the object

V. Virtual

• I, II, III

• I, III, IV

• I, IV, V

• III, IV, V

The speed of light in vacuum is

• $3\times10^8m/s$

• $2.8\times10^8m/s$

• $3\times10^7m/s$

• $3\times10^9m/s$

What is the angle of reflection (θ_r) in the image?

• 56^o

• 90^o

• 124^o

• 34^o

Which of the following characteristics are correct for the image formed in a plane mirror?

I. Upright

II. Inverted

III. Real

IV. Same size as the object

V. Virtual

• I, II, III

• I, III, IV

• I, IV, V

• III, IV, V

Assertion: Incident light is reflected in only one direction from a smooth surface.

Reason: Since the angle of incidence and the angle of reflection are same, a beam of parallel rays of light falling on a smooth surface is reflected as a beam of parallel light rays in one direction only.

• Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

• The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

• Assertion is true but the Reason is false.

• The statement of the Assertion is false but the Reason is true.

The size of an object and its image are the same in this type of mirror...

• Plane

• Convex

• Concave

You see the reflection of the clock without numbers in your plane mirror. The image formed by the hands of the clock shows the time of 3:30. What is the real time?

• 3:30

• 8:30

• 9:30

• 10:30

What is the distance of your image from you if you stand 1.5 m in front of a plane mirror?

• 1.5 m

• 2.0 m

• 3.0 m

• 4.5 m

Angles are always measured from the:

• Boundary
• Normal
• Incident Ray
• Reflected Ray

Write the phenomenon does the figure show

• Spectacular reflection

• Total Internal Reflection

• Diffuse reflection

• Refraction