| ⇦ | 
| ⇨ |
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: - Moment of inertia, along the diameter of a ring is
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
- The breaking stress of a wire depends upon
- The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Moment of inertia, along the diameter of a ring is
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
- The breaking stress of a wire depends upon
- The two ends of a metal rod are maintained at temperatures 100°C and 110°C.
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