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We see objects around us because light from the object enters in our eyes. Given statement is true or false
Light falling on the object bounces back. This is known as ______
The ray striking the object is called
The ray which returns back after reflection is called
The perpendicular line to the object where incident ray and reflected ray intersect is called
Angle made by incident ray with normal is called
Angle made by ray which returns back from the object is called
Angle of incidence ______ angle of reflection
If angle of incidence is zero degree angle of reflection will be
According to second law of reflection, incident ray, reflected ray and normal lie in
Which of the following is not the law of reflection?
a. Angle of incidence is equal to angle of reflection
b. Incident ray, reflected ray and normal lie in same plane
c. Energy can neither be created nor be destroyed, it can be converted from one form to another
d. The total energy in the universe remains constant
Image produced by plane mirror is
Virtual image suggest that ______
The size of image formed by the plane mirror is
Plane mirror show
In ambulance word “Ambulance” is written in reverse, why?
Reflection occurring form smooth surface is called
Reflection occurring form irregular surface is called
In diffused reflection, the reflected rays spread in different directions. True or false
“Diffused reflection do not obey laws of reflection” True or False
During diffused reflection angle of incidence is
When two or more mirrors are used in combinations then such mirrors forms multiple images
If the angle between two mirrors is 0 degree then number of images formed will be
If angle between two mirrors is 60 degrees, then number of images formed will be
Angle between two mirrors is 180 degrees. How many images will be formed in the mirror?
Angle between two mirrors is 30 degrees. How many images will be formed in the mirror?
A device used to make beautiful appearing patterns using the principle of multiple image formed by mirrors placed at an angle is called
Arrange in correct order
a. Take a cardboard disc with a hole at centre. Close one end of tube with it
b. At other end place a circular plane glass plate touching the mirrors
c. Obtain 3 rectangular strips about half feet long and 4 cm wide. Join them in such a way to form a prism
d. Place colored glass on the glass plate
e. Close the other end of the tube with another glass plate
The splitting of light into different colors is example of
Choose the correct example for dispersion
The thin membrane of eye is
Choose the correct location of iris
Dark muscular diagram located behind cornea is
Amount of light entering in our eyes is control by
Pupil contracts when
pupil expand when
Choose correct option with respect to eyeball in the human eye
Adjustments of focal length in eye done with the help of
In eye image of object is formed at
For normal vision focal length of lens is
Choose correct option with respect to distant vision
Choose correct option with respect to near vision
a. Size of lens in eye reduces
b. Size of lens in eye increases
c. Increase in focal length
d. Decrease in focal length
Ability of lens to adjust its focal length to form clear image on retina is called
For normal human eye distance of distinct vision is
Eye problems are caused due to lack of
Which of the following food contains Vitamin A?
A normal eye can read up to a distance of
Retina of eye can get injured due to
Night blindness is caused due to lack of vitamin
People can improve their vision using aids like
Find the odd man out
Which of the following is optical aids among the given option?
Find the odd man out
Braille system contains ___ which once memorise helps a blind person to read