One newton has how many dynes?
1
10^3
10^5
None of these
A semicircle has how many radians?
2 Pi
4 Pi
Pi
None of these
The value of resistance is 10.845 ohms and the value of current is 3.23A. The potential difference is 35.02935 V. The correct significant value of potential difference is?
35 V
35.0V
35.03
None of these
The dimension of frequency is same as that of?
Time Period
Angular Velocity
Reciprocal vector
None of these
Which of the following physical quantity have a dimension?
Angular Magnification
Strain
Angular displacement
Resolving Power
None of these
Less precision results in which type of error:?
Systematic Error
Random Error
Personal Error
None of these
One year is equal to:?
365 days
365.25 days
364.75 days
None of these
An experiment is performed ten (10) times with a stop watch. The absolute uncertainty of the experiment will be 😕
Same as that of percentage uncertainty
Equal to the least count of the stop watch
Average of the ten (10) measurements
None of these
Volume of the pyramid is lwh/3. If % uncertainty in the length is 3%, width 5% and height is 4%. What will be the % uncertainty in the volume of the pyramid.?
60%
20%
4.3%
None of these
If d is measured to be 10 cm, and it is measured with the help of an instrument having least count of 0.1 cm. Determine the percentage uncertainty?
10%
50%
100%
None of these
If an astronaut on the moon sent a light signal on earth which is reflected back to him. After how many time, the light signal is received back?
1.3 sec
1 min 20 sec
8 min 20 sec
None of these
The first digit dropped is less than 5, the last digit retained is?
Decreased by one
Increased by one
unchanged
None of these
A Second is defined as the duration of vibration of?
Carbon atom
Cesium atom
Radium atom
None of these
Dimension of work is same as that of?
Power
Torque
Momentum
None of these
Dimension of modulus of elasticity is same as that of?
Strain/Stress
Stress
Strain
None of these
The solid angle subtended at the center of sphere is 3 Sr. by an area of 300 cm^2. What is the diameter of sphere?
10
20
0.01
None of these
An experiment is performed to determine value of ‘g’ repeated for five times: 9.77, 9.81, 9.89, 9.79, 9.86 (in units of m/s^2). The correct statement about this experiment is?
Precise but not accurate
Precise as well accurate
Accurate but not precise
None of these
Mass of an object has 8% uncertainty. The momentum supplied is 8% uncertain. Total % uncertainty in “K.E.” is?
1%
2%
8%
None of these
Dimension analysis does not give us information about?
whether a physical quantity is a scalar or vector.
the shape of the object
constant of proportionality
Both (A) and (C)
All of these
The dimension of light year is?
[L]
1/[L]
[T]
None of these
The equation to determine speed of wave in string is v^2 = F/m. Here F is the tension in the string. The equation is:?
Dimensionally correct
Dimensionally in-correct
Which of the following is a base unit?
kilo-gram
pascal
newton
None of these
Total Steradians in a sphere are:?
2 pi
4 pi
pi
None of these
Prefix Angstrom is equal to?
1 nm
0.1 nm
10 nm
None of these
The absolute uncertainties are added in:?
multiplication/division
power
addition/subtraction
None of these
