1
KCET 2018
MCQ (Single Correct Answer)
+1
-0
An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm . The distance of the image formed is
A
+20 cm
B
+10 cm
C
-20 cm
D
-10 cm
2
KCET 2018
MCQ (Single Correct Answer)
+1
-0
A candle placed 25 cm from a lens forms an image on a screen placed 75 cm on the other side of the lens. The focal length and type of the lens should be
A
+18.75 cm and convex lens
B
-18.75 cm and concave lens
C
+20.25 cm and convex lens
D
-20.25 cm and convex lens
3
KCET 2017
MCQ (Single Correct Answer)
+1
-0
According to cartesian sign convention, in ray optics
A
all distance are taken negative
B
all distances in the direction of incident ray are taken positive
C
all distances are taken positive
D
al distances in the direction of incident ray are taken negative
4
KCET 2017
MCQ (Single Correct Answer)
+1
-0
A linear object of height 10 cm is kept in front of a concave mirror of radius of curvature 15 cm , at a distance of 10 cm . The image formed is
A
magnified and erect
B
magnified and inverted
C
diminished and erect
D
diminished and inverted
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