NEW
Font size
WorksheetsLIGHT class 10
Total questions: 10
Worksheet time: 8mins
A concave mirror produces a magnification of +4. The object is placed:
At the focus
Between focus and centre of curvature
Between focus and pole
Beyond the centre of curvature
The radius of curvature of a mirror is 20cm the focal length is
20 cm
10 cm
40 cm
5 cm
Convex lens focus a real, point sized image at focus, the object is placed
At focus
Between F and 2F
At infinity
At 2F
In optics an object which has higher refractive index is called
Optically rarer
Optically denser
Optical density
Refractive index
A concave mirror gives real, inverted and same size image if the object is placed
At F
At infinity
At C
Beyond C
Image formed by plane mirror is
Real and erect
Real and inverted
Virtual and erect
Virtual and inverted
A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light:
Is refracted towards the normal
Is refracted away from the normal
Is reflected along the same path
Does not get refracted
