Options:
- A. ? radian
- B. 2? radian
- C. ?/2 radian
- D. 4? radian
View Answer
B. 2? radian
Physics
The relation between linear and angular acceleration is______________?
Options:
- A. a = a x r
- B. a = r x a
- C. a = a x r
- D. r = a x a
View Answer
C. a = a x r
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
The number of significant figures in the length of a bar 6200mm measured by meter rod is_______________?
Options:
- A. 4
- B. 3
- C. 2
- D. None of these
View Answer
A. 4
Centripetal force performs_______________?
Options:
- A. Maximum work
- B. Minimum work
- C. Negative work
- D. No work
View Answer
D. No work
The number 76.85 is rounded off up to two significant figures as_____________?
Options:
- A. 76.8
- B. 77
- C. 76.9
- D. None of these
View Answer
B. 77
When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?
Options:
- A. mV/r2
- B. mV/r
- C. mV2/r
- D. mV2/r2
View Answer
C. mV2/r
Which of the following is not a correct representation method for prefixes______________?
Options:
- A. 1mm
- B. 10km
- C. 1000um
- D. Both A and B
View Answer
C. 1000um
A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is______________?
Options:
- A. Maximum
- B. Zero
- C. Equal to the weight of the stone
- D. Less than the weight of the stone
View Answer
C. Equal to the weight of the stone
The rotational K.E of the hoop is equal to the______________?
Options:
- A. its translational K.E
- B. half than its translational K.E
- C. double than its translational K.E
- D. four times than its translational K.E
View Answer
A. its translational K.E