Question

Unit and Dimensions
Exercise-1 =
PART-I: ONLY ONE OPTION CORRECT TYPE
(4) 6.3 x 10-3 Joule
SECTION (A) : UNITS
(3) 6.3 x 103 Joule
One watt-hour is equivalent to -
(2) 3.6 x 10-3 Joule
(1) 3.6 % 103 Joule
(4) Ampere/volt
(3) (Ampere)2xohm
Which of the following is not equal to watt -
(2) Amperexvolt
(1) Joule/second
Which of the following is not the unit of length:
(2) light year
(1) micron
(4) radian
(3) angstrom
(4) Watt /m2 K4
Unit of Stiffen's constant is -
(2) Watt-m2-K4
(1) Watt -m -K
(3) Watt /m2 -K
(4) J - kg ?
(3) J - kg
(4) Light year
The S.I. unit of gravitaional potenital is
(2) J. kg 1
(1) J
Length cannot be measured by
(2) Debye
(1) Fermi
The Value of Plancks Constant is
(2) 6.63x1034 J/sec
(1) 6.63 x10 J-sec
(3) Micron
(4) 6.63 x10 - kg - M2 (4) 6.63 x1034 kg / sec
(4) Energy
(3) Mass
Faraday is the unit of
(1) Charge
(2) emf
(4) energy of y-rays
(3) intensity of y-rays
Curie is a unit of -
(1) half life
(2) radioactivity
(4) Flux
(3) Frequency
10.
Hertz is a unit of
(1) Force
(2) Acceleration
(4) Energy
(3) Distance
11.
Light year is a unit of-
(1) Time
(2) Mass
(4) Atmosphere
12.
SI unit of pressure is-
(3) cm of Hg
(2) Dyne/cm2
(1) Pascal
Which of the following is not a fundamental unit -
(3) Candela
(2) Second
(1) Kelvin
(4) Kilogram weight
13.
If n is number and u is the unit of a physical quantity then which of the following is correct fo
measurement of "n"-
(3) n a su
(1) n o size of u
14.
(4) na ū
12
In C.G.S. system the magnitude of the force is 100 dynes. In another system where the fundan
physical quantities are kilogram, meter and minute, the magnitude of the force is-
(4) 36
(3) 3.6
(2) 0.36
(1) 0.036
15.
Pick out the right choice S2 = atº. Here S is measured in meters, t in second. Then the unit
(4) m?s-4
16.
(3) m²54
(2) ms?
(1) ms-2
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Answer 1

Answer:

1) 3.6×10^3

2)joule per second

3)radian

4)WM-2k-4

5)j /kg

6)energy

7)6.023×10-34

8)charge

9)radioactivity

10)frequency

11)distance

12)Pascal

.........

hope it helps u dear......