Everyday Science MCQs

Correct answer B. 100 km

Correct answer D. To produce parallel beams of light

Correct answer B. Graded index fibre

Correct answer A. Fo/fe

Correct answer A. Repeaters

Correct answer A. 42°

Correct answer A. Focus

Correct answer C. -10 dioptre

Correct answer D. 4f

Correct answer C. Between the principal focus and the optical centre

Correct answer B. 2

Correct answer A. It increases with age

Correct answer A. f/2

Correct answer A. fo + fe

Correct answer B. Virtual and inverted

Correct answer A. They are different, with the core's index higher than the cladding's

Correct answer A. f1f2/(f2 + f1)

Correct answer A. Spherical aberration

Correct answer B. 25 cm

Correct answer C. It increases with decrease in focal length