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Question Detail
Name of the instrument to measure atomspheric pressure ?
- Barometer
- Barograph
- Bolometer
- Callipers
Answer: Option A
Explanation:
Barograph - Recordings of atmospheric pressure,
Bolometer - Used to measure heat radiation,
Callipers - Used to measure inner and outer diameters of bodies.
1. 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.
2. Alexander Graham Bell invented
- Telephone
- Telescope
- Television
- Tank
Answer: Option A
Explanation:
Alexander Graham Bell of USA invented Telephone in 1876,
Telescope was invented by Hans Lippershey of Netherlands in 1608,
Television was invented by John Logie Bared of Scotland in 1926,
Tank was invented by Sir Ernest Swington of England in 1914.
3. 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.
4. If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this ?
- Newton first law
- Newton second law
- Newton third law
- Principle of conservation of linear momentum
Answer: Option D
5. Sudden fall in barometer is indication of
- Storm
- Rain
- Tide
- Clear weather
Answer: Option A
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