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The aperture
The exposure time
The focal length of the lens
Size of the camera
Which one of the following does not contain silver?
Which one of the following elements isotope is used in the treatment of cancer
Which one of the following gases is most soluble in water?
Which one of the following glands in the human body stores iodine?
Which one of the following glands produces the growth hormone (somatotrophin)?
Which one of the following groups of animals belongs to the category of endangered species?
Which one of the following is a fast growing tree?
Which one of the following is a working principle of Refrigerator ?
Which one of the following is also called stranger gas?
Which one of the following is an antidiuretic hormone ?