10th Physics Chapter 3: Geometrical Optics

Sr #	Questions	A	B	C	D
1	What does the lens equation determine?	The magnification of the lens	The focal length of the lens	The power of the lens	The refractive index of the lens
2	A convex mirror is commonly used in shopping malls for:	Enhancing security	Providing decorative effects	Helping customers see around corners	Reflecting light evenly across the store
3	Image formation in the human eye is primarily due to the:	Cornea	Retina	Iris	Pupil
4	The equation for calculating the critical angle is:	n = sin(c)	n = cos(c)	n = tan(c)	n = csc(c)
5	Which of the following conditions must be met for total internal reflection to occur?	Light must pass from a denser medium to a rarer medium	Light must pass from a denser medium to a rarer medium	The angle of incidence is greater than the critical angle	The angle of incidence is less than the critical angle
6	When light bounces off a surface, it is called:	Refraction	Reflection	Diffraction	Dispersion
7	A convex lens is used to correct which of the following vision problems?	Nearsightedness	Farsightedness	Astigmatism	Cataracts
8	What is the critical angle for a medium with a refractive index of 1.5?	30 degrees	45 degrees	60 degrees	90 degrees
9	The angle by which a ray of light is bent when it passes through a prism is called:	Refraction angle	Reflection angle	Deviation angle	Incidence angle
10	When white light passes through a prism, it separates into its constituent colors. This phenomenon is known as:	Reflection	Refraction	Dispersion	Diffraction
11	What happens to the deviation of light passing through a lens if the incident angle increases?	The deviation increases	The deviation decreases	The deviation remains the same	The deviation becomes zero
12	When light passes through a prism, it undergoes:	Reflection	Refraction	Diffraction	Interference