Image formed by a bi-convex lens is ?

C. Real or virtual depending on object distance

Which experiment demonstrated the dual nature of light?

A. Rutherford gold foil experiment

Everyday Science · Physics in Everyday Life · page 8 of 44

Light & Optics MCQs with Answers

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Light & Optics (incl. Lenses) MCQs (71–80)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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71.
Image formed by a bi-convex lens is ?
Correct Answer: C. Real or virtual depending on object distance
One-liner
The image formed by a bi-convex lens can be real or virtual depending on the object distance from the lens.
72.
The product of wavelength and frequency gives?
Correct Answer: A. Speed of light
One-liner
The product of wavelength and frequency gives the speed of light (wave velocity).
73.
The lens which converges a beam of parallel rays of light are called ?
Correct Answer: A. Converging lens
One-liner
A lens that converges a beam of parallel rays of light is called a converging lens (also known as a convex lens).
74.
Kaleidoscope operates on the principle of multiple reflections, where several mirrors are placed at an angle of to one another?
Correct Answer: C. 60°
One-liner
In a kaleidoscope, mirrors are typically placed at an angle of 60° to one another to produce symmetrical patterns through multiple reflections.
75.
White light is made up of color.
Correct Answer: A. 7
One-liner
White light is made up of 7 colors (VIBGYOR: Violet, Indigo, Blue, Green, Yellow, Orange, Red).
76.
The type of waves that are used in the television remote controllers?
Correct Answer: B. Infra-red waves
One-liner
Television remote controllers use infra-red waves to transmit signals to the TV.
77.
What is the true color of sunlight?
Correct Answer: B. White
One-liner
The true color of sunlight is white, as it contains all the colors of the visible spectrum combined.
78.
When electromagnetic radiation falls on a surface, the angle between reflected light and refracted light is 90° at an angle called?
Correct Answer: B. Brewster's angle
One-liner
The angle at which reflected and refracted rays are perpendicular (90°) to each other is called Brewster's angle.
79.
Past Paper MCQ
Which type of lens is used to correct long-sight (hypermetropia) defect?
Correct Answer: D. Convex lens
One-liner
A convex lens is used to correct long-sightedness (hypermetropia) because it converges light rays onto the retina.
80.
Which experiment demonstrated the dual nature of light?
Correct Answer: D. Photoelectric effect
One-liner
The photoelectric effect demonstrated the dual nature of light by showing that light behaves as particles (photons) when it ejects electrons from a metal surface.

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Light & Optics MCQs with Answers

Light & Optics (incl. Lenses) MCQs (71–80)

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