When white light passes through a prism, it splits into its component colours. This phenomenon is called
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If you want to see your full image then the, minimum size of the plane mirror
The wavelengths corresponding to violet, yellow and red lights are λv , λy and λr respectively.
An object A is placed at a distance d in front of a plane mirror. If one stands directly behind the object at a distance S from the mirror, then the distance of the image.of A from the individual is
A light bulb is placed between two plane mirrors inclined at an angle of 60°. The number of images formed are
A person of height 1.8 standing at the centre of a room having equal dimensions of 10 m wishes to see the full image of the back wall in the mirror fixed on the front wall. The minimum height of the plane mirror needed for this purpose is
Two plane mirrors inclined at an angle to one another have an object placed between them. If five images of the object are observed, the maximum possible angle between the mirrors is
In case of a thick plane mirror multiple images arc formed. The brightest of all the images will be
The focal length of a concave mirror is f and the distance from the object to the principal focus is x. The magnification obtained will be
In a museum a child walks towards a large concave mirror. He will see that
The magnification of an object placed 10 cm from a convex mirror of radius of curvature 20 cm will be
A concave mirror of focal length 10 cm produces an image five times as large as the object. If the image is in front of the mirror, the distance of the object from the mirror will be
To form an image twice the size of the object, using a convex lens of focal length 20 cm, the object distance must be –
Refractive index of glass w.r.t. air is 3/2. What is the refractie index of air w.r.t glass ?
A glass prism has refractive index 1.5 and the refracting angle 90° If a ray falls on it at an angle of incidence of 30°, then the angle of emergence will be
When monochromatic light passes from vacuum to a material medium and vice versa; which of the following characteristics of light beam does not change ?
A piece of glass when immersed in a transparent solution of refractive index 1.48 becomes almost invisible. The refractive index of glass used is
Which of the following conditions are necessary for total internal reflection to take place at the boundary of two optical media?
I. Light is passing from optically denser medium to optically rarer medium.
II. Light is passing from optically rarer medium to optically denser medium.
III. Angle of incidence is greater than the critical angle.
IV. Angle of incidence is less than the critical angle.
The speed of light in vacuum is 3.0 × 108 m/s. If the refractive index of a transparent liquid is 4/3, then the speed of light in the liquid is
The refractive indices of water and glass are 4/3 and 3/2 respectively. The refractive index of water with respect to glass is
Which of the following can be used to form a virtual image of an object?
I. convex lens
II. concave lens
III. concave mirror
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