Question Detail
What is unit of Work and Energy ?
- Joule
- kilogram
- amphere
- meter
Answer: Option A
1. What is Hooke's Law ?
- Stress is inversely proportional to strain.
- Stress is directly proportional to strain.
- Stress and strain are dependent on each other.
- Stress and strain are independent of each other.
Answer: Option B
2. Which instrument is used to measure the scattering of light by particles suspended in a liquid ?
- Nephetometer
- Ohmmeter
- Ondometer
- Pyrometer
Answer: Option A
Explanation:
Ohmmeter - is used to measure electrical resistance in ohms,
Ondometer - is used to measure frequency of electromagnetic waves,
Pyrometer - is used to measure very high temperature.
3. Which of following in not a property of cathode ray.
- Cathode rays are invisible and travel in a straight line.
- These rays can ionise gases.
- These rays can penetrate through thin metal foils.
- These rays make materials cool on which they fall.
Answer: Option D
Explanation:
These rays heat the materials on which they fall.
4. What is displacement ?
- Longest distance covered by a body in a random direction.
- Shortest distance covered by a body in a random direction.
- Shortest distance covered by a body in a definite direction.
- Longest distance covered by a body in a definite direction.
Answer: Option C
5. Radiocarbon is produced in the atmosphere as a result of
- collision between fast neutrons and nitrogen nuclei present in the atmosphere
- action of ultraviolet light from the sun on atmospheric oxygen
- action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
- lightning discharge in atmosphere
Answer: Option A