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Rajshree Chatterjee

Asked: December 21, 2023In: Class 10 Science

A student always sitting at the back of the bench rows in a class, who has difficulty in reading. What could name of his defect of vision? Could you draw ray diagrams to illustrate the image formation of his eyes, when he is seated at the (i) back seat and also (ii) front seat. Could you state two possible reasons of his defect of vision. Could you explain the method of correcting this defect with the help of a ray diagram, if possible.

CBSE Class 10 Science Sample Question Paper 2023-2024

Rajshree Chatterjee

Asked: December 21, 2023In: Class 10 Science

Name the phenomenon that governs the following: – i) Green beetles living in green bushes are not eaten by the crows. ii) Number of blue beetles in green bushes increases, only because the red beetles living there were trampled by a herd of elephants. iii) No ‘medium height plants’ are obtained in F1 generation, upon crossing pure tall and dwarf pea plants. iv) Tails of mice were surgically removed for several generations; still mice had tails in the following generations. v) A migrant beetle reproduces with the local population; as a result genes of migrant beetle enter the new population.

CBSE Class 10 Science Pre Board Sample Question Paper 2023-24

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