Units And Measurements
Test 2
Full marks: 40
Time: 10 Minutes
Each right answer contains +4 and Wrong answer -1 marks.
1.
Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m? [NEET 2020 Phase I]
9.98 m
2.
If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy. [NEET 2021]
[F][A–1][T]
3.
If E and G respectively denote energy and gravitational constant, then E G has the dimensions of: [NEET 2021]
[M2] [L–2] [T–1]
4.
Of the following quantities, which one has dimension different from the remaining three? [CBSE-PMT 1989]
Energy per unit volume
5.
SI unit of pressure is:
Pascal
6.
Joule × second is the unit of:
Momentum
7.
The percentage error in the measurement of mass and speed are 2% and 3% respectively. The error in kinetic energy obtained by measuring mass and speed will be:
2%
8.
If p is radiation pressure, c represents speed of light and Q represents radiation energy striking unit area per second, then non zero integers x, y, and z such that Px Qy Cz is dimensionless are: [CPMT 1992]
9.
The unit of surface tension in SI system is: [PMT 1984; CPMT 1985, CBSE PMT 1993]
Dyne/cm 2
10.
Which of the following represents a volt [CPMT 1990]
Joule per second
Score
Scroll Up