A thin converging lens has focal length 100 cm. What is its optical power in diopters?
A) 1 D B) 0.5 D C) 1.5 D D) 2 D Answer: A Explanation: Use power in diopters = […]
Light (Reflection & Refraction), Physics
Light (Reflection & Refraction)
Light (Reflection & Refraction), Physics
A thin converging lens has focal length 20 cm. What is its optical power in diopters?
A) 2.5 D B) 5 D C) 7.5 D D) 10 D Answer: B Explanation: Use power in diopters = […]
Light (Reflection & Refraction), Physics
A thin converging lens has focal length 25 cm. What is its optical power in diopters?
A) 4 D B) 2 D C) 6 D D) 8 D Answer: A Explanation: Use power in diopters = […]
Light (Reflection & Refraction), Physics
A thin converging lens has focal length 40 cm. What is its optical power in diopters?
A) 1.25 D B) 3.75 D C) 5 D D) 2.5 D Answer: D Explanation: Use power in diopters = […]
Light (Reflection & Refraction), Physics
A thin converging lens has focal length 50 cm. What is its optical power in diopters?
A) 1 D B) 3 D C) 2 D D) 4 D Answer: C Explanation: Use power in diopters = […]
Light (Reflection & Refraction), Physics
A thin converging lens has focal length 80 cm. What is its optical power in diopters?
A) 0.625 D B) 1.25 D C) 1.875 D D) 2.5 D Answer: B Explanation: Use power in diopters = […]
Light (Reflection & Refraction), Physics
From which kind of medium can total internal reflection occur into another?
A) Lower toward higher only B) Higher refractive index toward lower refractive index C) Always a vacuum into any solid […]
Light (Reflection & Refraction), Physics
How does a plane mirror reverse an image in terms of depth?
A) Front and back are reversed in the mirror coordinate B) Up and down always exchange C) Colors always invert […]
Light (Reflection & Refraction), Physics
How does a smaller opening affect diffraction of a wave with fixed wavelength?
A) It prevents all spreading B) It changes light into sound C) It generally makes spreading more pronounced D) It […]
Light (Reflection & Refraction), Physics
Identify the quantity or concept for a line perpendicular to a surface at the point a ray meets it.
A) Total internal reflection B) Focal length C) Normal line D) Plane mirror Answer: C Explanation: Normal line refers to […]