Options:
- A. ?R
- B. 2? R
- C. 0
- D. 4?R
View Answer
C. 0
Physics
A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________?
Options:
- A. 9.8 N
- B. 19.6 N
- C. 129.4 N
- D. 39.2 N
View Answer
D. 39.2 N
Velocity of fluid increases where the pressure is________________?
Options:
- A. Low
- B. High
- C. Constant
- D. Changes continuously
View Answer
A. Low
Which one is venturi relation ?
Options:
- A. P1
- B. V2 = 2g (h1-h2)
- C. P = 1 /2?V2 = ?gh = constant
- D. A1 V1 = A2 V2 = constant
View Answer
A. P1
The time period of a second pendulum is______________?
Options:
- A. 4 seconds
- B. 3 seconds
- C. 2 seconds
- D. 6 seconds
View Answer
C. 2 seconds
The phase of SHM describes________________?
Options:
- A. Displacement only
- B. The direction of motion only
- C. Both displacement and direction of motion
- D. Neither displacement nor direction of motion
View Answer
C. Both displacement and direction of motion
In case of a simple pendulum, the cause of damping is__________________?
Options:
- A. Drag force of air
- B. Gravity
- C. Tension in the string
- D. None of these
View Answer
A. Drag force of air
The unit of radioactivity curie is equal to________________?
Options:
- A. 3.74 x 109 disintegration per sec
- B. 3.70 x 1010 disintegration per sec
- C. 3.55 x 1010 disintegration per sec
- D. 3.60 x 1010 disintegration per sec
View Answer
B. 3.70 x 1010 disintegration per sec
The penetration power of alpha particle as compared to beta particle is_______________?
Options:
- A. 10 times more
- B. 100 times more
- C. 100 times less
- D. 10 times less
View Answer
B. 100 times more
Which of the following will be a better shield against gamma rays ?
Options:
- A. Ordinary water
- B. Heavy water
- C. Lead
- D. Aluminum
View Answer
C. Lead