Options:
- A. Earth
- B. Neptune
- C. Jupiter
- D. Moon
View Answer
C. Jupiter
Physics
A wire of length L is stretched by a length E when a force F is applied at one end. If the elastic limit is not exceeded the amount of energy stored in the wire is_________________?
Options:
- A. FE
- B. (FE)
- C. FE2/L
- D. FE2
View Answer
B. (FE)
Gravitational P.E of a body has____________________?
Options:
- A. no formula
- B. a formula mgh only
- C. a formula
- D. no general formula
View Answer
D. no general formula
When the speed of a moving body is doubled then___________________?
Options:
- A. its K.E is doubled
- B. its acceleration is doubled
- C. its P.E is doubled
- D. its momentum is doubled
View Answer
D. its momentum is doubled
A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?
Options:
- A. 0.01J
- B. 0.02J
- C. 0.04J
- D. 1.0J
View Answer
A. 0.01J
One mega watt hour is equal to_________________?
Options:
- A. 36 x 106 J
- B. 36 x 1012 J
- C. 36 x 109 J
- D. 36 x 108 J
View Answer
D. 36 x 108 J
A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?
Options:
- A. Stress/strain
- B. (stress/strain)
- C. Stress x strain
- D. (Stress / strain)
View Answer
D. (Stress / strain)
Work has the dimension as that of same as that of__________________?
Options:
- A. torque
- B. angular momentum
- C. linear momentum
- D. power
View Answer
A. torque
The ration stress to strain in youngs modulus of the material then tension is__________________?
Options:
- A. Directly proportional to extension
- B. Directly proportional to strain
- C. Directly proportional to square of amplitude
- D. Inversely proportional to extension
View Answer
A. Directly proportional to extension