State whether the following statements are True or False.
Q8. A concave lens can be used to produce an enlarged and erect image. (1mark)
Q9. A convex lens always produces a real image. (1mark)
Q10. An object can be seen only if it emits light. (1mark)

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Solution

Dear student,
8.False. A concave lens can only form an erect, diminished and virtual image of an object.
9. False A convex lens can form inverted, diminished and real image of an object when object keep between pole and focus.
10. False. An object can be seen only if it reflects light falling on it.

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Question 11

State whether the following statements are True or False.
(a) A concave lens can be used to produce an enlarged and erect image.
(b) A convex lens always produces a real image.
(c) The sides of an object and its image formed by a concave mirror are always interchanged.
(d) An object can be seen only if it emits light.

Mark ‘T’ if the statement is true and ‘F’ if it is false:

(a) We can obtain an enlarged and erect image by a convex mirror. (T/F)

(b) A concave lens always forms a virtual image. (T/F)

(d) A real image cannot be obtained on a screen. (T/F)

(e) A concave mirror always forms a real image. (T/F)

Q. State whether true or false :

When a convex lens is used as a magnifying glass (simple microscope), a real, inverted and enlarged image is produced.

Q. Concave lens always produces virtual image and convex lens always produces real image.

Question 4

You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either

(a) concave mirror or convex mirror.

(b) concave mirror or convex lens.

(d) concave lens or convex lens.

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State whether the following statements are True or False. Q8. A concave lens can be used to produce an enlarged and erect image. (1mark) Q9. A convex lens always produces a real image. (1mark) Q10. An object can be seen only if it emits light. (1mark)

State whether the following statements are True or False.
Q8. A concave lens can be used to produce an enlarged and erect image. (1mark)
Q9. A convex lens always produces a real image. (1mark)
Q10. An object can be seen only if it emits light. (1mark)