Geometrical Optics is the study of light behavior through reflection, refraction, and dispersion. It focuses on how light interacts with lenses, mirrors helping to explain the formation of images in devices like eyeglasses, cameras, and telescopes.
Class 10 physics chapter 3 Notes
An example of input device computer is: Keyboard
Totally reflecting prism turns the incident ray at an angle of: 90o
When the object is placed beyond 2F of a convex lens, the image formed will be: Real, inverted and of the same size as the object
A device which has two ways communication is: Mobile phone
After refraction from a convex lens, rays of light parallel to the principal axis converge at a point, this point of convex lens is called: Principal focus
A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance: 15 cm
An object is 14 cm is front of a convex mirror. The image is 5.8 cm behind the mirror. What is the focal length of the mirror: 9.9 cm
The line which passes through pole of the mirror and center of curvature is called principal: axis
The distance between principal focus and pole of mirror is called: Focal length
Power of lens is: 1/f
CD which is made of soft material is called: Floppy disk
Which of the following is not processing: Gathering
rarefactions is called: Wave length
The centre of spherical mirror is called: Pole
The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be: Totallly reflected
If focal length of a lens is 1m, then its power will be: 1 D
When light passes through a prism it deviates from its original path due to: Refraction
From which of the following we can get information almost about everything: Internet
For a normal person audible frequency range for sound wave lies between: 20Hz and 20 kHz
If a ray of light is glass is incident on an air surface at an angle greater than the critical angle, the ray will: reflect only
Focal length for concave mirror is: #NAME?
Which types of image is formed by a concave lens on a screen: Upright and virtual
Which form of energy is sound: mechanical
The ray of the light after reflection from concave mirror passes through: Principal focus
Angle opposite to the base of triangle of prism is called: angle of prism
The distance of the object from the mirror is represented by: p
The loudness of a sound is most closely related to its: Amplitude
The principal focus of a concave mirror is: Real
Critical angle for diamond is: 24o
The point through which rays of light pass after reflection from concave mirror is called principal: Focus
An object is placed 6 cm away in front of a concave mirror that has 10 cm focal length. Determine the location of the image: -15 cm
The data stored in C.D is: 680 MB
When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90o is called: critical angle
Sun light consist of _______ colour: 7
The focal length is related to radius of curvature by the formula: f = R/2
The mirror whose outer surface is reflecting is called: Convex mirror
Astronauts in space need to communicate with each other by radio links because: Sound waves cannot travel in space
To see stomach problems we use: Gastroscope
The distance of spherical mirror is called: Aperture
Image formed on a camera is: real,invertred, and diminished
Mathematical relationship between critical angle “C” and refractive index “n” is: N = 1 / sin c
The critical angle for glass to: 42o
In totally reflecting prism one angle is of 90o, and other two angles are of: 45o,45o
Which of the following quantities is not change during refraction of light: its frequency
_______ is always virtual in case of convex mirror: image
The angle of which prism deviates the incident ray is called: angle of deviation
What does the term e mail stand for: Electronic mail
The distance of image from mirror is represented by: q
The totally reflectiing prism one angle is of: 90o
Snell’s law is stated as: sin i / sin r = n2/n1
Snell’ law is: n=sin <i/sin<r
The mirror whose inner surface is reflecting is called: Concave mirror
In a convex mirror the size of the image: Depends upon the position of the object
To see from submarine the ship at the surface of water , we use: Peri scope
The index of refraction depends on: The speed of light
A data storage device is: Hard disk
Magnification of mirror is given by: m=q/p
The refractive index of internal coating of optical fibre is: 1.53
The ray of light striking to the side of prism is called: incident ray
The minimum value of angle of deviation is called: angle of minimum deviation
Hard disk is made of: Aluminium
Optical fibers work on the principle of: Total internal reflection
Power of convex lens is 10 D. Its focal length is: 0.1 m
An object of placed at he centre of curvature of a concave mirror. The image produced by the mirror is located: at the centre of curvature
Concave mirror formula is given by: 1/f=1/p+1/q
Speed of light in air is ms 1: 3 x 108
Totally reflecting prism is used in: periscope and binocular
The ratio of image height to object height is called: Linear magnification
The refractive index of air is: 10,003
Which is an example of a longitudinal wave: Sound wave
Bouncing back of light after striking the surface is called: Reflection
A normal eye can see near objects clearly at a distance of: 25 cm
The S.I unit of power of a lens is: Dioptre
Half of radius of curvature is called: Focal length
Which types of image is produced by the converging lens of human eye if it view a distant object: Real, inverted, diminshed
How does sound travel from its source to your ear: By changes in air pressure
Important : Review all previous years’ 10 class past papers for comprehensive practice and better exam preparation.