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WorksheetsRevision LIGHTS (408)
Total questions: 11
Worksheet time: 11mins
Which of the following is correct about the image of an object formed by a convex mirror?
Virtual , upright , diminished
Real , upright , diminished
Virtual , inverted , magnify
Real , inverted , magnify
Diagram 17 shows an object is placed in front of the plane mirror.
Which is the correct position of the image?
A
B
C
D
The depth of a swimming pool appears to be less than its actual depth. The light phenomenon which causes this is
Reflection
Interference
Diffraction
Refraction
Which diagram shows θ is critical angle of semicircular glass block ?
Diagram 18 shows a ray of light is passing through the liquid and transparent sphere. If the refractive index of the liquid is higher
V
W
Y
Z
The critical angle of the liquid is 480 .
Which diagram shows the total internal reflection?
What is the function of an astronomical telescope ?
To see small object
To see large object
To see distant object
To see object above the water surface
Which of the instrument use the concept of total internal reflection?
Diagram 19 shows a light ray travelling from medium X to air.
Calculate the refractive index of the medium X.
0.82
1.22
1.57
1.74
An experiment is carried out to determine the focal length of a convex lens. When the distance between the object and the image is 80 cm, the size of the image is the same as the size of the object.
What is the focal length of the convex lens?
10 cm
20 cm
30 cm
40 cm
Which of the following ray diagram is NOT correctly drawn?
