- A6
- B5
- C7
- D4
Time Taken:
Correct Answer:
Wrong Answer:
Percentage: %
Number of basic SI unit is 7. These are kilogram(kg), meter(m), second(s), Kelvin(K), mole(mol), ampere(A) and candela(cd).
Ampere is the unit of Current Electricity.
Light-year is the unit of Astronomical Distances.
One fermimetre is equal to 10-15 m.
One astronomical unit is the average distance between Earth and the Sun.
The most suitable unit for expressing nuclear radius is fermi.
The rate of change of momentum of a body is equal to the resultant Force.
It is easy to burst a gas-filled balloon with a needle than with nail. It is because Needle exerts more pressure than nail on the balloon.
A passenger in a moving train tosses a coin upward which falls behind him. It implies that the motion of the train is accelerated.
Answer: Option D Explanation: Velocity is defined as vector form. Because it describes both direction and magnitude. If it only refers magnitude means it is called as scalar form. Other three options are in scalar forms.