Question 1 :
Give one use each of a concave and a convex mirror.

Question 4 :
Changing of right side to the left side is called ___.

Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb8df59b460d7261ec59.PNG ' /> In the above figure, What are the characteristics of the image formed ?

Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbebf59b460d7261eccd.jpg' /> A person takes a convex lens or magnifying glass and puts it in the path of sunrays. Then, he places a sheet of paper as shown in the figure. He adjusts the distance between the lens and the paper till he gets a bright spot on the paper. Now, he holds the lens and the paper in this position for a few minutes. Does the paper begin to burn?

Question 9 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb88f59b460d7261ec53.JPG' /> In the above figure, 6 is ______ in colour.

Question 10 :
What type of mirror is used as a side mirror in a scooter?

Question 11 :
What type of mirror is used to examine eyes, nose, ear, throats?

Question 13 :
Image formed by a convex __________ is always virtual and smaller in size.

Question 15 :
If the reflecting surface is on the outside, the mirror is called ____.

Question 16 :
Which of the following is the correct symbol of a battery?

Question 17 :
True or False. The compass needle gets deflected when the current flows in a nearby wire.

Question 20 :
Which of the following is the correct symbol of an electric cell?

Question 21 :
The wire gets hot when an electric current passes through it. What is this effect called as?

Question 22 :
Longer line in the symbol for a cell represents its ___________terminal.

Question 24 :
Which device is used as a safety device which prevents damages to electrical circuits and possible fires?

Question 25 :
A person takes an electric cell, a bulb, a switch and connecting wires. He makes an electric circuit. He keeps the switch in the ‘OFF’ position. Will the bulb glow?

Question 26 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbd5f59b460d7261ecb0.jpg' /> In the above figure , will the compass needle show deflection when the switch in the circuit is closed?

Question 28 :
Which of the following precautions need to be taken while using electric gadgets/appliances/ circuit?

Question 29 :
The wire gets hot when an electric current passes through it. What is this effect called as?

Question 30 :
Which of the following is the correct symbol of a switch in OFF position?

Question 32 :
When the current is switched on through a wire, a compass needle kept nearby gets deflected from its ______ position.

Question 34 :
A current carrying wire acts as a _______ with a magnetic field around it.

Question 35 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbd2f59b460d7261ecab.jpg' /> A person takes around 75 cm long piece of insulated (plastic or cloth covered or enamelled) flexible wire and an iron nail, say about 6–10 cm long. He winds the wire tightly around the nail in the form of a coil. Now, he connects the free ends of the wire to the terminals of a cell through a switch as shown in above figure. Next, he places some pins on or near the end of the nail. Now, he switches on the current. Do the pins cling to the tip of the nail?