Q.1.
A concave lens is in contact with a convex lens. The magnitude of the ratio of their focal lengths is 2/Their equivalent focal length isπ‘π‘š. What are their individual focal lengths respectively?
Q.2.
Light produced by an object due to being a very high temperature is called
Q.3.
The larger the index of refraction the ...
Q.4.
A concave lens forms the image of an object such that the distance between the object and image iscm and the magnification produced is 1/The focal length of the lens will be : __________
Q.5.
A real image is formed in plane mirror.
Q.6.
If frequency increases, wavelength ____
Q.7.
A magnifying glass is an example of what type of lens?
Q.8.
Images seen in a plane mirror are always