A. 100 cm
B. 99 cm
C. 99.2 cm
D. 98 cm
✅ The correct answer is option C.
Physics MCQs
Which of the following types of force can do no work on the particle on which it acts?
A. Frictional force
B. Gravitational force
C. Elastic force
D. Centripetal force
✅ The correct answer is option D.
Irregular flow of fluid is called
A. Streamline
B. Turbulent
C. Uniform
D. Laminar
✅ The correct answer is option B.
If the length of the second pendulum becomes four times, then its time period will become
A. 4 times
B. 6 times
C. 8 times
D. 2 times
✅ The correct answer is option D.
If a body a mass of 2 kg is raised vertically through 2m, then the work done will be
A. 38.2 J
B. 392.1 J
C. 39.2 J
D. 3.92 J
✅ The correct answer is option C.
The force responsible for the vibratory motion of the simple pendulum is
A. mg cosθ
B. mg sinθ
C. mg tonθ
D. mg
✅ The correct answer is option B.
An elevator weighing 3.5 x 10-6 N is raised to a height of 1000 m in the absence of friction, the work done is
A. 3.5 x 103 J
B. 3.5 x 104 J
C. 3.5 x 106 J
D. 3.5 x 109 J
✅ The correct answer is option D.
A lens which converges a beam of parallel rays to a point is called
A. Diverging (or concave) lens
B. Converging (or convex) lens
C. Plano concave lens
D. Plano-convex lens
✅ The correct answer is option B.
The average power and instantaneous power become equal if work is done at
A. Any rate
B. At variable rate
C. At a uniform rate
D. At a high rate
✅ The correct answer is option C.
A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called
A. Center of curvature
B. Focus
C. Optical centre
D. Aperture
✅ The correct answer is option B.