Question 1 :
lf you touch your _________ ear with your righthand in front of a plane mirror, it will be seen in the mirror that your right ear is touched with _______ .

Question 2 :
Fill in the blanks: A person 1 m in front of a plane mirror seems to be _____ away from his image?

Question 4 :
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 5 :
Where does the lens of our eye form the image of an object?

Question 7 :
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 :
Which of the following statements is correct regarding rods and cones in the human eye?

Question 10 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d075f59b460d7261f2f6.jpg' /> 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. Let us assume that mirrors are placed at the turns so that he can see the object. If any of the mirrors is removed, will he be able to see the objects?

Question 11 :
When angle of incidence is equal to the angle of reflection

Question 12 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0dbf59b460d7261f377.JPG' /> From the above image,Find out the position of the image of an object situated at A in the plane mirror.

Question 13 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on Marble floor?

Question 14 :
The objects which emit their own light are known as _______ objects?

Question 15 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d07cf59b460d7261f300.jpg' /> In the above figure, two mirrors A and B are placed at right angles to each other. A ray of light incident on mirror A at an angle of $25^\circ$ falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be

Question 16 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d07bf59b460d7261f2fe.jpg' /> Light is falling on surface $S_1$, $S_2$, $S_3$ as shown in the above figure. Surfaces on which the angle of incidence is equal to the angle of reflection is/are

Question 17 :
Choose the correct option, The angle of incidence is equal to the angle of reflection?

Question 18 :
Behind the cornea, we find a dark muscular structure called _____ ?

Question 19 :
The most popular resource for visually challenged persons is Braille, it was developed by?

Question 20 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on Polished wooden table?

Question 21 :
Choose the correct option, Image formed by a plane mirror is?

Question 22 :
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 23 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0dcf59b460d7261f379.JPG' /> From the above image, Can Boojho at C see this image?

Question 24 :
Suppose you are in a dark room. Can you see objects OUTSIDE the room?

Question 25 :
Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?

Question 26 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0dcf59b460d7261f378.JPG' /> From the above image, Can Paheli at B see this image?

Question 27 :
If the angle of incidence ray is given $30^{\circ}$, then what is the angle of reflection?

Question 28 :
A person 1 m in front of a plane mirror seems to be _______ m away from his image.

Question 29 :
The lens focuses light on the back of the eye, on a layer called?