Question 4 :
The swift movement of the falling water droplets along with the rising air create lightning and sound. It is this event that is called a _______
Question 5 :
The chain of events ends with the formation of a very low-pressure system with very high-speed winds revolving around it. It is this weather condition that is called a ______
Question 6 :
High-speed winds accompanying a cyclone can damage _______ causing tremendous loss of life and property.
Question 10 :
Air moves from a region of _______ pressure to a region of_____ pressure.
Question 11 :
Which of the following is the correct symbol of an electric bulb?
Question 12 :
The safety device based on the heating effect of electric current is called a _____________.
Question 14 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb53f59b460d7261ec1b.PNG' />
Three bulbs A, B, C are connected in a circuit as shown in figure. When the switch is ‘ON’
Question 15 :
Which of the following precautions need not to be taken while using electric gadgets/appliances/ circuit?
Question 16 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbd5f59b460d7261ecaf.jpg' />
In the circuit shown in the above figure, what will be the order in which the bulbs A, B and C will glow when the switch is moved to the ‘ON’ position?
Question 18 :
Which of the following is the correct symbol of a battery?
Question 19 :
The coil behaves like a magnet when electric current flows through it. When the electric current is switched off, the coil generally loses its magnetism. Such coils are called?
Question 20 :
Which of the following precautions need to be taken while using electric gadgets/appliances/ circuit?
Question 21 :
Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
Question 22 :
You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from:
Question 23 :
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use?
Question 24 :
Image that cannot be formed on a screen is known as _________.
Question 26 :
We can obtain a real, enlarged and inverted image by a concave mirror. (T/F)
Question 29 :
A person stands in front of a plane mirror and looks at his image. Now, he touches his right ear. Which ear does his hand touch in the image?
Question 30 :
What type of mirror is used as a side mirror in a scooter?