How many types of concave lens are there?
- One
- Two
- Three
- Four
Explanation
Three types of concave lenses:
1. Bi-concave Lens:
This lens has two surfaces that are curved inward, resembling a double concave shape.
It is the most common type of concave lens and diverges light rays symmetrically from both sides.
2. Plano-concave Lens:
This lens features one flat surface and one concave surface.
The flat side is known as a "plano" surface.
3. Convexo-Concave Lens:
Also called a menisco-concave lens, this type has one convex (outward-curving) surface and one concave (inward-curving) surface.
For it to be a concave lens, the concave surface must have a greater curvature than the convex surface, which is moving away from the other.
Related MCQs
درج ذیل میں سے کون سی طبعی خصوصیت کولیگیٹو خاصیت نہیں
- Relative lowering of vapour pressure
- Elevation of boiling point
- Viscosity
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
کون سا آلہ کیمیائی توانائی کو برقی توانائی میں تبدیل کرتا ہے؟
- Generator
- Battery
- Modem
- Electric Motor
اس سوال کو وضاحت کے ساتھ پڑھیں
تبخیر کس درجہ حرارت پر ہو سکتی ہے؟
- Freezing point
- Melting point
- Boiling point
- All temperatures
اس سوال کو وضاحت کے ساتھ پڑھیں
- Platinum oxide only
- Iron powder
- Vanadium pentoxide
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 96,485
- 48,250
- 1,000
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
