Question Text
Question 1 :
The power of a lens having a focal length of $$1 cm$$ is :<br/>
Question 3 :
How does the power of a lens change if its focal length is doubled?<br>
Question 4 :
In case of a real and inverted image, the magnification of a mirror is:
Question 5 :
Under which of the following conditions will a convex mirror of focal length <i>f</i> produces an image ofreal object that is erect, diminished and virtual
Question 7 :
When the face is very close to the spoon the image formed by the outside bulged part?
Question 9 :
In case of a real and inverted image, the magnification created by the mirror is<br/>
Question 11 :
The ratio of the sine of angle  of incidence to the sine of angle of refraction is a constant for :
Question 12 :
When light goes from a denser to a rarer medium the angle of refraction is:
Question 13 :
A ray of light is incident normally on a plane glass slab. What will be the angle of refraction ?
Question 15 :
The focal length of convex lens is 30 cm and the size of image is quarter of the object, then the object distance is:-