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WorksheetsPHY CDF 116
Total questions: 21
Worksheet time: 12mins
Convex mirrors are commonly used as
SHAVING MIRROR
REAER VIEW MIRROR IN VEHICLE
SOLAR FURNACES
DENTIST TO CHECK PATIENTS
Convex mirrors always give an
ERECT
REAL
VIRTUAL
INVERTED
Position of object AT INFINITY
AT C
AT INFINITY
BEYOND C
AT FOCUS
Position of object BEYOND C
B/W F AND C
AT C
AT F
BEHIND MIRROR
Position of image BEHIND MIRROR
BEYOND C
B/W P AND F
B/W C AND F
AT F
Position of image AT C
AT C
AT F
AT INFINITY
AT P
Position of object at c SIZE (a)
Position of object at f SIZE
(a)
Position of object at c SIZE
(a)
Position of object AT INFINITY convex mirror
AT F
AT INFINITY
AT F,BEHIND MIRROR
AT C
Position of object B/W INFINITY AND POLE
B/W P AND F,BEHIND MIRROR
AT INFINITY,FRONT OF MIRROR
AT P,ON MIRROR
NO REFLECTION
The object is always placed to the_ _ _ _ _of the mirror. This implies that the light from the object falls on the mirror from the _ _ _ _ _side.
RIGHT.RIGHT
RIGTH,LEFT
LEFT,RIGHT
LEFT,LEFT
All distances parallel to the principal axis are measured from the _ _ _ _ _of the mirror.
POLE
CENTRE OF CURVATURE
FOCUS
BEHIND MIRROR
All the distances measured to the right of the origin (along + x-axis) are taken as _ _ _ _ _ while those measured to the left of the origin (along-x-axis) are taken as _ _ _ _ _
NEGATIVE,POSITIVE
POSITIVE,POSTIVE
POSITIVE,NEGATIVE
NEUTRAL,NEUTRAL
MIRROR FORMULA
v+u=f
1/v+1/u=1/f
v-u=f
1/v-1/u=1/f
Magnification produced by a spherical mirror gives the relative extent to which the image of an object is magnified with respect to the object size.
m=Height of the image (h')+Height of the object (h)
m=Height of the image (h')=Height of the object (h)
m=Height of the image (h')-Height of the object (h)
m=Height of the image (h')/Height of the object (h)
The magnification m is also related to the object distance (u) and image distance (v). It can be expressed as:
m=h'/h-v/u
m=h'/h=-v/u
m=h'/h/(-v/u)
m=h'/h*-v/u
. If the light rays are travelling from one medium to another they change their direction at the boundary between two mediums.
Cause it is due to the change of speed of light in different medium that the light rays are refracted.
Cause it is due to the change of direction of light in different medium that the light rays are refracted.
Cause it is due to the change of speed of light in different medium that the light rays are reflected.
Cause it is due to the change of direction of light in different medium that the light rays are reflected.
The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane. ii. The ratio of sin of angle of incidence to the sin of angle of refraction is _ _ _ _ _, for the light of a given colour and for the given pair of media. This law is also known as _ _ _ _ _
VARIABLE,SNELLS LAW OF REFRACTION
CONSTANT,SNELLS LAW OF REFLECTION
CONSTANT,SNELLS LAW OF REFRACTION
VARIABLE,SNELLS LAW OF REFLECTION
If i is the angle of incidence and r is the angle of refraction, then
sin i/sin r=variable
sin i*sin r=constant
sin i-sin r=constant
sin i/sin r=constant
This constant value is called the _ _ _ _ _ of the second medium with respect to the first
REFLECTION INDEX
NO INDEX
REFRACTIVE INDEX
EQUAL IN
