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Chapter No. 7: Lenses, Right or Wrong, Science I, SSC, 10th Maharashtra,

Right or Wrong, Science I, SSC, 10th Maharashtra,

Write right or wrong. If wrong, write the correct sentence.

Chapter No. 7: Lenses

The height of the real image in a convex lens is taken to be positive.

Ans. Wrong.
Reason: The height of real image in a convex lens is taken to be negative.

A convex lens forms a virtual image of an object placed at infinity.

Ans. Wrong.
Reason: A convex lens forms a virtual image of an object placed between F1 and Optical Centre O.

The rod like cells respond to the intensity of light and give information about the brightness or dimness of the object to the brain.

Ans. Right.

For normal human eye, the far point is at 25 cm.

Ans. Wrong.
Reason: For normal human eye the near point is at 25 cm while the far point is at infinity.