Options:
- A. Binding energy per nucleon
- B. Energy of decay
- C. Destruction energy
- D. All of above
View Answer
A. Binding energy per nucleon
Physics
The dot product of force and velocity is__________________?
Options:
- A. power
- B. work
- C. impulse
- D. torque
View Answer
A. power
The relation between the escape velocity V esc and orbital speed Vo is given by________________?
Options:
- A. V esc = 1/2Vo
- B. V esc = -2 Vo
- C. V esc = Vo
- D. V esc = 2Vo
View Answer
B. V esc = -2 Vo
A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is____________________?
Options:
- A. The extension of the wire is proportional to the force applied
- B. The weight of the wire is negligible
- C. The wire is not stretched beyond its elastic limit
- D. The cross sectional area of the wire remains constant
View Answer
A. The extension of the wire is proportional to the force applied
A uniform steel wire of length 4m and area of cross-section 3
Options:
- A. 0.025J
- B. 0.50J
- C. 0.75J
- D. 0.100J
View Answer
C. 0.75J
What is the value of the current in a wire of 10cm long at the right angle to a uniform magnetic field of 0.5 Weber/m2 when the force acting on the wire is 5N ?
Options:
- A. 1A
- B. 10A
- C. 100A
- D. 1000A
View Answer
C. 100A
A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?
Options:
- A. independent mass m
- B. directly proportional to m
- C. directly proportional to q
- D. directly proportional to B
View Answer
D. directly proportional to B
When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?
Options:
- A. a straight line parallel to the field
- B. a parabola in a plane perpendicular to the field
- C. a circle in a plane perpendicular to the field
- D. a straight line along its initial direction
View Answer
C. a circle in a plane perpendicular to the field
To find the r.m.s value of an alternating current mathematically we need to have ________________?
Options:
- A. Mean value of I2
- B. Square root of mean value of I2
- C. Square root of I2
- D. Square of 1/2
View Answer
B. Square root of mean value of I2
An inductive coil has a resistance of 100?. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45?. What is the inductance of the coil ?
Options:
- A. 10mH
- B. 12mH
- C. 16mH
- D. 20mH
View Answer
C. 16mH