Navigate

A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.

A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m. The power of the source is

Options

(a) 20 W
(b) 25 W
(c) 40 W
(d) 50 W

Correct Answer:

20 W

Explanation:

Velocity, v = displacement / time = 6/3 = 2 m/s

.·. Power, P = Fv = 10 × 2 = 20 W

OA2006
admin:

Related Questions

  1. If R is the radius of the earth and g is the acceleration due to gravity
  2. Maximum velocity of the photoelectrons emitted by a metal surface is 1.2×10⁶ ms⁻¹.
  3. A wire carrying current I has the shape as shown in adjoining figure. Linear parts
  4. The range of voltmeter is 10V and its internal resistance is 50Ω.
  5. Light of frequency 8×10¹⁵ Hz is incident on a substance of photoelectric work