Question:
In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens, after refraction: ____.
In a concave lens, a ray of light emanating from the object parallel to the principal axis of the lens, after refraction: ____.
Show Hint
Concave lens = Diverging (appears to come from F). Convex lens = Converging (actually passes through F).
Updated On: May 28, 2026
- passes through the second principal focus.
- appears to diverge from the first principal focus.
- emerges parallel to the principal axis.
- passes through 2F, which is the radius of curvature of the lens.
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
A concave lens is a diverging lens. It spreads out parallel rays of light.
Step 2: Detailed Explanation:
1. When a ray parallel to the principal axis strikes a concave lens, it is refracted away from the axis. 2. If we trace this refracted ray backward, it passes through the principal focus ($F$) on the same side as the object. 3. Therefore, to an observer on the other side, the light "appears to diverge" from the focus.
Step 3: Final Answer:
The ray appears to diverge from the first principal focus.
Was this answer helpful?
1
0
Top NEET Physics Questions
- The time constant of C-R circuit is
- The correct Boolean operation represented by the circuit diagram drawn is :
- The driver of a car travelling with speed $30\, m/sec$ towards a hill sounds a horn of frequency $600\, Hz.$ If the velocity of sound in air is $330\, m/s,$ the frequency of reflected sound as heard by driver is
- Two simple harmonic motions of angular frequency 100 and 1000 rad $s^1$ have the same displacement amplitude. The ratio of their maximum acceleration is
- In an ac circuit , an alternating voltage $e = 200 \sqrt2 \,sin \,100\, t$ volts is connected to a capacitor of capacitance $1 \,\mu \,F$. The rms value of the current in the circuit is :
View More Questions
Top NEET Images Formed By Lenses Questions
- In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to one lens will be, respectively:
एक अवतल लेंस में, बिंब से निकलने वाले प्रकाश की एक किरण, जो लेंस के मुख्य अक्ष के समानांतर है, वह अपवर्तन के पश्चात :
- The lens combination as shown consists of two thin lenses \(L_1\) and \(L_2\) of focal lengths \(+10\ \text{cm}\) and \(-10\ \text{cm}\), respectively. The object is placed \(30\ \text{cm}\) to the left of \(L_1\), and the distance between the two lenses is \(3\ \text{cm}\). The position of the image formed is:
- चित्र में दिखाए गए लेंस संयोजन में, दो लेंस \(L_1\) और \(L_2\) हैं जिनकी फोकस दूरियाँ क्रमशः \(+10cm\) और \(-10cm\) हैं। हमें प्राप्त प्रतिबिंब की स्थिति ज्ञात करनी है :
Top NEET Questions
- A $100.0\, mL$ dilute solution of $Ag ^{+}$is electrolysed for $15.0$ minutes with a current of $1.25 \,mA$ and the silver is removed completely. What was the initial $\left[ Ag ^{+}\right]$?
- The time constant of C-R circuit is
- The chronological order of human evolution from early to the recent is
- The correct Boolean operation represented by the circuit diagram drawn is :
- The driver of a car travelling with speed $30\, m/sec$ towards a hill sounds a horn of frequency $600\, Hz.$ If the velocity of sound in air is $330\, m/s,$ the frequency of reflected sound as heard by driver is
View More Questions