10th physics question paper
Here are some very important objective questions for 10th-grade Physics:
1. **What is the SI unit of electric current?**
- a) Volt
- b) Watt
- c) Ampere
- d) Ohm
- **Answer:** c) Ampere
2. **Which device is used to measure potential difference?**
- a) Ammeter
- b) Voltmeter
- c) Galvanometer
- d) Thermometer
- **Answer:** b) Voltmeter
3. **What is the speed of light in a vacuum?**
- a) 3 × 10^8 m/s
- b) 3 × 10^6 m/s
- c) 3 × 10^7 m/s
- d) 3 × 10^5 m/s
- **Answer:** a) 3 × 10^8 m/s
4. **Which mirror is used as a rear-view mirror in vehicles?**
- a) Plane mirror
- b) Convex mirror
- c) Concave mirror
- d) Spherical mirror
- **Answer:** b) Convex mirror
5. **Which phenomenon explains the splitting of white light into seven colors?**
- a) Reflection
- b) Refraction
- c) Dispersion
- d) Diffraction
- **Answer:** c) Dispersion
6. **Which law states that current is directly proportional to voltage?**
- a) Newton’s Law
- b) Ohm’s Law
- c) Faraday’s Law
- d) Coulomb’s Law
- **Answer:** b) Ohm’s Law
7. **What is the focal length of a plane mirror?**
- a) Infinite
- b) Zero
- c) 10 cm
- d) 5 cm
- **Answer:** a) Infinite
8. **Which type of lens is used to correct myopia (short-sightedness)?**
- a) Convex lens
- b) Concave lens
- c) Biconvex lens
- d) Plano-convex lens
- **Answer:** b) Concave lens
9. **What is the unit of power?**
- a) Joule
- b) Watt
- c) Newton
- d) Coulomb
- **Answer:** b) Watt
10. **Which material is commonly used as a filament in electric bulbs?**
- a) Copper
- b) Tungsten
- c) Aluminum
- d) Iron
- **Answer:** b) Tungsten
