• 1.  Which of the following statements is/are true?

• A convex lens has 4 dioptre power having a focal length 0.25 m
• A convex lens has -4 dioptre power having a focal length 0.25 m
• A concave lens has 4 dioptre power having a focal length 0.25 m
• A concave lens has – 4 dioptre having a focal 0.25 m
• 2.  The refractive index of water is 1.33. The speed of light in water will be:

• 1.33 × 10^8 m/s
• 3 × 10^8 m/s
• 2.66 × 10^8 m/s
• 2.26 × 10^8 m/s

• -10 cm
• 20 cm
• -30 cm
• -40 cm

• +50 cm
• -100 cm
• -50 cm
• +100 cm
• 5.  The man's image appears to be-

• upright
• inverted
• alive
• moving at a different rate
• 6.  A concave lens has focal length of 20 cm. At what distance from the lens a 5 cm tall object be placed so that it forms an image at 15 cm from the lens? Also calculate the size of the image formed.

• u=-60; h' =(5/4)
• u=-60; h' =(4/5)
• u= +60; h' =(5/4)
• u=+60; h' =(4/5)

• virtual
• real
• upside down
• upright

• 2 m
• 4 m
• 8 m

• erect
• upright
• inverted
• 10.  In the mirror equation above d0 represents:

• Distance of the object from the mirror
• Distance of the image from the mirror
• The focal length
• The plane of incidence

• Concave
• Convex
• Specular
• Plane

• virtual
• real
• upright
• upside down
• 13.  Name the mirror that curves inwards

• plane mirror
• convex mirror
• concave mirror
• spherical mirror

• 75 cm
• 25 cm
• 15 cm
• 60 cm

• 1.05m
• 2.50m
• 1.39m
• 0.72m

• 20
• 40
• 70
• 90

• True
• False
• 18.  The following is a picture of what type of mirror?

• Convex (diverging) mirror
• Concave (converging) mirror
• Plane Mirror
• Flat Mirror

• concave
• convex
• plane
• window
• 20.  The 2 reflected rays that meet.

• ray of incident
• reflected image is produced
• focal point
• image is not produced

• Concave
• Convex
• Plane

• True
• False
• 23.  According to the laws of reflection, if i = angle of incidence and r = angle of reflection,

• A. i =  r
• B. i >  r
• C. r >  i
• D. i is not equal to r

• 20
• 40
• 70
• 90

• 40
• 50
• 80
• 90
• 26.  What does The law of reflection state?

• the angle the incident ray makes with a line drawn perpendicular to the surface of the mirror.
• shows how rays change direction when they strike mirrors and pass through lenses.
• The angle of reflection is equal to the angle of incidence.
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