Physics Crash Course NDA & NA EE>Chapter 21 - Ray Optics>Exercise 1>Q 60

EASY

NDA & NA EE

IMPORTANT

Earn 100

If we need a magnification of $375$ from a compound microscope of tube length $150 m m$ and an objective of focal length $5 m m,$ the focal length of the eye-piece, should be close to:

25% studentsanswered this correctly

Important Questions on Ray Optics

EASY

NDA & NA EE

IMPORTANT

Physics Crash Course NDA & NA EE>Chapter 21 - Ray Optics>Exercise 1>Q 61

There are four lenses

L_{1}, L_{2}, L_{3}

and

L_{4}

of focal lengths,

2, 4, 6

and

8 cm

respectively Two of these lenses form a telescope of length

10 cm

and magnifying power

4

. The objective and eye lenses are