Question Detail
Light year is a unit of
- Time
- Light
- Distance
- Intensity of light
Answer: Option C
1. What is newton third law of motion ?
- Every body maintains its initial state rest or motion unless no external force is applied.
- The rate of change in momentum of a body is directly proportional to the applied force on the body and takes place in the direction of force.
- To every action there is equal and opposite reaction.
- None of above.
Answer: Option C
Explanation:
Newton First Law of Motion : Every body maintains its initial state rest or motion unless no external force is applied.
Newton Second Law of Motion : The rate of change in momentum of a body is directly proportional to the applied force on the body and takes place in the direction of force.
2. The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called
- Nuclear fusion
- Nuclear fission
- Nuclear reaction
- Fast breeding
Answer: Option B
3. What is the range of mercury thermometer ?
- 0 degree Celsius to 350 degree Celsius
- -10 degree Celsius to 350 degree Celsius
- -20 degree Celsius to 350 degree Celsius
- -30 degree Celsius to 350 degree Celsius
Answer: Option D
4. Atom is the smallest part of matter which takes part in chemical reactions.
- True
- False
Answer: Option A
5. David Hughes invented
- Machine Gun
- Microphone
- Microscope
- Motorcycle
Answer: Option B
Explanation:
David Hughes of USA invented Microphone in 1878,
Machine Gun was invented by Richard Gatling of USA in 1861,
Microscope was invented by Z. Jansen of Netherlands in 1590,
Motorcycle was invented by Edward Butler of England in 1884.