Optics MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
Master Optics with Expert Online Physics Exams
Enhance your understanding of Optics with focused online physics exams designed to sharpen your preparation. These resources offer comprehensive insights into basic physics concepts, including light, reflection, refraction, and lens systems. Utilize practice tests and MCQ answers to deepen your grasp of optical principles and phenomena. Focusing on force and motion MDCAT MCQs alongside optics-related practice questions will significantly boost your exam performance.
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The phenomenon where light bends when it passes through a medium with varying density is called:
A. Refraction
B. Reflection
C. Dispersion
D. Diffraction
Answer: Refraction
The power of a lens is the reciprocal of its focal length in:
A. Meters
B. Centimeters
C. Millimeters
D. Kilometers
Answer: Meters
The distance from the optical center of a lens to its focal point is known as:
A. Focal length
B. Lens diameter
C. Optical power
D. Refractive index
Answer: Focal length
The image produced by a convex mirror is always:
A. Virtual and diminished
B. Real and enlarged
C. Virtual and enlarged
D. Real and diminished
Answer: Virtual and diminished
When light travels from air into water, its speed:
A. Decreases
B. Increases
C. Remains the same
D. Doubles
Answer: Decreases
The angle between the incident ray and the reflected ray is called the:
A. Angle of deviation
B. Angle of refraction
C. Angle of incidence
D. Angle of reflection
Answer: Angle of deviation
The image formed by a convex lens when the object is at the focal point is:
A. At infinity
B. At the principal focus
C. At the optical center
D. At the center of curvature
Answer: At infinity
Total internal reflection occurs when light travels from a medium with a higher refractive index to a medium with a lower refractive index at an angle greater than the:
A. Critical angle
B. Refraction angle
C. Angle of incidence
D. Angle of reflection
Answer: Critical angle
The dispersion of light into a spectrum is due to:
A. Different wavelengths refracting by different amounts
B. Different intensities of light
C. Absorption of light
D. Scattering of light
Answer: Different wavelengths refracting by different amounts