Question
Give one use each of a concave and a convex mirror.
✓
Answer
Concave mirrors can form enlarged image of the object. Therefore, they are used by the dentist to see the enlarged image of the patient’s teeth. Convex mirror forms diminished and upright image of the object. It is used as a side view mirror of the car because it enables the driver to view objects spread over a large area behind him/her.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What are villi? What is their location and function?
What are stomata? Give two functions of stomata.
Table : Finding the speed of trains Name of the railway station nearest to your place of stay Delhi.
| Name of the train | Name of the next station | Distance till the next station (km) | Time taken till the next station(N) | Speed of the train between these two stations (km/h) |
| Vande Bharat | Ambala Cantt. | 214 | 2h 12 min | |
| Shatabdi Express | Aligarh | 158 | 1h 30 min | |
| Tejas Express | Kota | 465 | 2h | |
| Shan-e-Punjab | Panipa | 99 | 1h 25 min |
What is cell?
On an average, an adult human being at rest breathes $15–18$ times per minute. The breathing rate, however, may differ under different conditions. Arrange the following activities given in the box in order of increasing breathing rates and give reason for your answer.
sleeping, cycling, brisk walk, watching $T.V.$
→sleeping, cycling, brisk walk, watching $T.V.$
Write four uses of electromagnets.
You are provided with three test tubes $A, B$ and $C$ as shown in figure with different liquids. What will you observe when you put:
- A piece of blue litmus paper in each test tube?
- A piece of red litmus paper in each test tube?
- A few drops of phenolphthalein solution to each test tube?
In what unique manner does a pitcher plant derive its nutrition?
Read the following story titled ‘Eco-friendly Prithin’, and tick the most appropriate option(s) given in the brackets. Provide a suitable title of your choice for the story.
Prithvi is preparing a meal in the kitchen. He chops vegetables, peels potatoes, and cuts fruits (physical changes/chemical changes). He collects the seeds, fruits, and vegetable peels into a clay pot (physical change/ chemical change). The fruits, vegetable peels, and other materials begin to decompose due to the action of bacteria and fungi, forming compost (physical change/chemical change). He decides to plant seeds in the compost and water them regularly. After a few days, he notices that the seeds begin to germinate and small plants start to grow, eventually blooming into colourful flowers (physical change/chemical change). His efforts are appreciated by all his family members.
Prithvi is preparing a meal in the kitchen. He chops vegetables, peels potatoes, and cuts fruits (physical changes/chemical changes). He collects the seeds, fruits, and vegetable peels into a clay pot (physical change/ chemical change). The fruits, vegetable peels, and other materials begin to decompose due to the action of bacteria and fungi, forming compost (physical change/chemical change). He decides to plant seeds in the compost and water them regularly. After a few days, he notices that the seeds begin to germinate and small plants start to grow, eventually blooming into colourful flowers (physical change/chemical change). His efforts are appreciated by all his family members.
List some animals surrounding your locality group them into following groups.
- Animals that excrete ammonia in gaseous forms.
- Animals that excrete uric acid in the form of pellets.
- Animals that excrete urea in the form urine.