Options:
- A. Rectilinear
- B. Curved
- C. Zig-zag or erratic
- D. Elliptical
View Answer
C. Zig-zag or erratic
Physics
The most useful tracer is_________________?
Options:
- A. Sr-90
- B. I-131
- C. CA-41
- D. C-14
View Answer
D. C-14
In scientific notation, numbers are expressed in________________?
Options:
- A. Power of ten
- B. Powers of two
- C. Reciprocal
- D. Decimal
View Answer
A. Power of ten
Absolute uncertainty in a measurement depends upon______________?
Options:
- A. The magnitude of the measurement
- B. Least count of the instrument
- C. Percentage error in the measurement
- D. All of a, b and C
View Answer
B. Least count of the instrument
To reduce the uncertainty in the timing experiment______________?
Options:
- A. Highly precise instrument
- B. Conduct at room temperature
- C. Count number of vibration
- D. Both a and C
View Answer
D. Both a and C
When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?
Options:
- A. Mass of a body
- B. Velocity of body
- C. The tension in the string
- D. Centripetal acceleration
View Answer
C. The tension in the string
What is the outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s ?
Options:
- A. 1N
- B. 10N
- C. 2N
- D. 100N
View Answer
A. 1N
Terminal velocity is given by equation_______________?
Options:
- A. Vt = gr2?
- B. Vt = 2gr2/9?
- C. Vt = gr2/9?
- D. Vt = 9gr2/2?
View Answer
B. Vt = 2gr2/9?
Stokes law is applicable if body has __________shape?
Options:
- A. Rough
- B. Square
- C. Circular
- D. Spherical
View Answer
D. Spherical
For ___________ flow the path of the fluid particles cannot be tracked?
Options:
- A. Laminar
- B. Streamline
- C. Turbulent
- D. Both A and B
View Answer
C. Turbulent