Question 3 : <img src='61b1d0fbf59b460d7261f3a1' />
Refer to the above figure. Can Paheli at B see the position of the image of an object situated at A in the plane mirror ?
Question 4 :
Boojho while waving his hand very fast in front of his eyes,
observes that his fingers appear blurred. What could be the reason
for it?
Question 5 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on White Chalk powder that is used in school?
Question 7 :
If the angle of incidence ray is given $$30^{\circ}$$, then what is the angle of reflection?
Question 8 :
The outer coat of the eye is white. It is tough so that it can protect the interior of the eye from accidents. Its transparent front part is called ______?
Question 9 : <img src='61b1d073f59b460d7261f2f3' />
Boojho planned an activity to observe an object A through pipes as shown in the above figure, so that he could see objects which he could not directly see. What must be the angle with respect to the incident light at which he should place the mirrors?
Question 10 : <img src='61b1d0f9f59b460d7261f39e' />
Refer to the above figure. Boojho stands at A just on the side of a plane mirror as shown in figure. Can he see himself in the mirror?
Question 12 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on Mirror?
Question 13 :
Reflection from a smooth surface like that of a mirror is called ______ ?
Question 14 : <img src='61b1d0ddf59b460d7261f37a' />
From the above image, When Paheli moves from B to C, where does the image of A move?
Question 15 :
Choose the correct option, Image formed by a plane mirror is?
Question 16 :
The angle between the normal and incident ray is called the ___________ ?
Question 17 : <img src='61b1d07ef59b460d7261f303' />
Look at the above image. Can the image of the child in it be obtained on a screen?
Question 19 :
An interesting feature of a kaleidoscope is that you will never see the same pattern again. Is it TRUE OR FALSE?
Question 20 : <img src='61b1d0faf59b460d7261f39f' />
Refer to the above figure. Can Boojho at C see the position of the image of an object situated at A in the plane mirror ?
Question 23 :
Fill in the blanks: Night birds have ___________ cones than rods in their eyes.
Question 24 :
Choose the correct option, The angle of incidence is equal to the angle of reflection?
Question 25 :
A person 1 m in front of a plane mirror seems to be _______ m away from his image.
Question 27 : <img src='61b1d0dbf59b460d7261f377' />
From the above image,Find out the position of the image of an object situated at A in the plane mirror.
Question 28 :
Part of the eye which controls the light entering is called
Question 32 :
The incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane. This law is known as ____________ ?
Question 33 :
How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?
Question 34 :
What is the angle of incidence of a ray if the reflected ray is at an angle of $$90^{\circ}$$ to the incident ray?
Question 36 :
Which of the following statements is correct regarding rods and
cones in the human eye?
Question 37 :
The retina contains several nerve cells. Sensations felt by the nerve cells are then transmitted to the brain through the optic nerve. Is it TRUE OR FALSE?
Question 38 :
The most popular resource for visually challenged persons is Braille, it was developed by?
Question 39 :
What is the angle of incidence of a ray if the reflected ray is at an angle of $$90^{\circ}$$ to the incident ray?
Question 40 :
The size of the pupil becomes ______ when you see in dim light.
Question 41 :
Fill in the blanks: If you touch your _______ ear with right hand in front of a plane mirror it will be seen in the mirror that your right ear is touched with the left hand.
Question 42 :
Which part of the eye gets affected if someone is suffering from cataract?
Question 43 :
The number of images formed by mirrors placed at an angle to one another to make numerous beautiful patterns is used in a _________ ?
Question 44 :
An image formed by a mirror the left of the object appears on the right and the right appears on the left. This is known as _______________ ?
Question 45 :
When all the parallel rays reflected from a rough or irregular surface are not parallel, the reflection is known as ______________?
Question 46 : <img src='61b1d0faf59b460d7261f3a0' />
Refer to the above figure. Boojho stands at A just on the side of a plane mirror as shown in figure. Can he see the image of objects situated at P, Q and R?
Question 47 :
The distance between the object and its image formed by a plane mirror appears to be 24 cm. What is the distance between the mirror and the object?
Question 48 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on Marble floor?
Question 49 :
The objects which emit their own light are known as _______ objects?
Question 50 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on Cardboard surface?
