| ⇦ | 
| ⇨ |
Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial. The power of the combination is:
Options
(a) √ f₁ / f₂
(b) √ f₂ / f₁
(c) f₁ + f₂ / 2
(d) f₁ + f₂ / f₁f₂
Correct Answer:
f₁ + f₂ / f₁f₂
Explanation:
The focal length of the combination
1/f = 1/f₁ + 1/f₂
Power of the combinations,
P = f₁ + f₂ / f₁ f₂ ( P = 1 / f )
Related Questions: - The current flowing through a lamp marked as 50 W and 250 V is
- Two spheres of mass m and M are situated in air and the gravitational force
- The electromagnetic theory of light failed to explain
- During an adiabatic process, the cube of the pressure is found to be inversely
- A particle of mass M is executing oscillations about the origin on the x-axis.
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The current flowing through a lamp marked as 50 W and 250 V is
- Two spheres of mass m and M are situated in air and the gravitational force
- The electromagnetic theory of light failed to explain
- During an adiabatic process, the cube of the pressure is found to be inversely
- A particle of mass M is executing oscillations about the origin on the x-axis.
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply