38. A concave mirror of focal length 20 cm forms a real image at a distance of 40 cm from the mirror
Find the position of the object.
39. Two resistors of resistances 50 and 2.50 are connected in parallel and then connected with a
battery of 5V. Find the total current in the circuit.
40. Describe the male reproductive system with suitable diagram.
41. What is tissue culture? Write the advantages of tissue culture.
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Tissue culture is a method of biological research in which fragments of tissue from an animal or plant are transferred to an artificial environment in which they can continue to survive and function.
The male reproductive system consists of the penis, scrotum, testes, epididymis, prostate and seminal vesicle.
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