State whether the following statements are True or False. (a) A concave lens can be used to produce an enlarged and erect image.

(a) concave mirror (b) convex lens (c) concave lens (d) convex mirror

Concave mirror can give an erect and enlarged image of an object, when object is placed between pole and focus of the mirror.

Here, in case of concave mirror u=10 cm [u, is always negative] v =?;m = - 3 [real image] Now the magnification formula is m= -v/u or -3= -(v/-10) or , v = -30 cm. Image will...

(a)Concave mirror (b) Convex lens (c) Concave lens (d) Convex mirror

(a) Cutting a log of wood into pieces is a chemical change. (False) (b) Formation of manure from leaves is a physical change. (False) (c) Iron pipes coated with zinc do not...

(a) False. Substances can be neutral as well. (b) False. Acids do not turn all indicators red. (c) True (d) False. It does not change the colour of litmus at all. (e) False. It...

(a) False, it is easy to predict the climate rather than the weather. (b) False, (since very few prey are available) polar bear need to have a strong sense of smell. (c)...

(b) only a concave mirror.

(c) both concave mirror and convex lens.

(b) concave lens provided the image is smaller than object.