Answer: Option B. -> False
:
B

The image formed by the convex lens can be real or virtual depending on the distance between the object and the lens. Real images only occur for objects which are placed outside and far from the convex lens. Virtual images are formed by placing an object between focus and pole of  the mirror.

Answer: Option A. -> Inner - concave; Outer - convex
:
A
A spherical mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (bulging inward). The inner surface of a spoon acts as a concave mirror and the outer surface of the spoon acts as a convex mirror.

Answer: Option B. -> False
:
B

The radius of curvature of a plane mirror is infinite. Therefore it is neither a convergent nor a divergent mirror.

Convex mirror is a divergent mirror and concave mirror is a convergent mirror.

A concave mirror is called a converging mirror because it brings incoming parallel rays together. It causes these rays to converge.

Answer: Option B. -> concave mirror
:
B
When the object is kept in between focus and the pole, a concave mirror forms an enlarged, virtual and erect image. A convex mirror always form diminished virtual image. A plane mirror always forms a virtual and erect image without any magnification.

Answer: Option B. -> False
:
B

A virtual image cannot be formed on a screen. Only real images are formed on a screen.

Answer: Option D. -> (A)-2, (B)-1, (C)-4, (D)-3
:
D
A plane mirror forms a virtual and erect image. The size of an image is the same as the size of the object.
A convex mirror always forms a virtual, erect and diminished image.
A convex lens can form enlarged images and thus are used in magnifying glass and microscope.
Dentists use a concave mirror to see an enlarged image of the teeth. If an object is placed close to a concave mirror it a forms an erect and enlarged image of the object.

Answer: Option D. -> Newton's disc
:
D
Newton's disc has different segments painted in different colours. They are painted in the order of  Violet, Indigo, Blue, Green, Yellow, Orange and Red. When the disc is rotating, all the colours appear to be white. Isaac Newton used this disc to demonstrate that white light is a combination of the seven different colours.