If lift is going up with acceleration, the apparent weight of a body is
may be more or less than true weight
equal to the true weight
less than the true weight
more than the true weight
Answer: Option D
Similar Questions :
1. Scalar Quantities are
physical quantities which have magnitude only and no direction
physical quantities which have no magnitude only and only direction
physical quantities which have magnitude only and direction
physical quantities which have no magnitude and no direction
Answer: Option A
2. 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.
3. Which instrument is used to measure altitudes in aircraft's ?
Audiometer
Ammeter
Altimeter
Anemometer
Answer: Option C
Explanation:
Ammeter - Measures strength of electric current.
Audiometer - Measures intensity of sound.
Anemometer - Measures force and velocity of wind and directions.
4. 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.
5. Orbital speed of a satellite is dependent of its mass.
True
False
Answer: Option B
Explanation:
Orbital speed of a satellite is independent of its mass.