A. increases with increase in age
B. decreases with increase in age
C. neither increases nor decreases
D. becomes infinite after 60 years
A. zero
B. focus
C. 2 f
D. f/2
A. fo + fe
B. fo – fe
C. fo / fe
D. fe / fo
A. real and inverted
B. real and erect
C. virtual and erect
D. virtual and inverted
A. same
B. different
C. zero
D. different with refractive index of core higher than cladding
A. f2 + f1
B. f2 – f1
C. f1f2/f2+f1
D. f1f2/f1-f2
A. chromatic aberration
B. spherical aberration
C. both spherical and chromatic
D. distortion
A. 15 cm
B. 25 cm
C. 30 cm
D. 40 cm
A. increase with increase in focal length
B. increase with decrease in focal length
C. no effect with decrease or increase with focal length
D. list distance of distinct vision
A. real and erect
B. virtual and erect
C. real and inverted
D. virtual