MCQ
Candela is the unit of
  • A
    Electric intensity
  • Luminous intensity
  • C
    Sound intensity
  • D
    None of these

Answer

Correct option: B.
Luminous intensity
b
The $SI$ unit of luminous intensity is candela $(cd)$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

values $2.71$ and $3.70$ ohm at $10°C$ and $100°C.$ The temperature at which the resistance is $3.26$ ohm is .......... $^oC$ 
The equation of displacement of two waves are given as ${y_1} = 10\sin \left( {3\pi t + \frac{\pi }{3}} \right)$; ${y_2} = 5(\sin 3\pi t + \sqrt 3 \cos 3\pi t)$. Then what is the ratio of their amplitudes
A ball is projected from ground at an angle of $\theta $ from horizontal then graph of kinetic energy and time will be
The motion of a torsional pendulum is:
  1. Periodic.
  2. Oscillatory.
  3. Simple harmonic.
  4. Angular simple harmonic.
An object is moving with a uniform acceleration which is parallel to its instantaneous direction of motion. The displacement $(s) - $ velocity $(v)$ graph of this object is
The amplitude of a wave represented by displacement equation $y = \frac{1}{{\sqrt a }}\sin \omega t \pm \frac{1}{{\sqrt b }}\cos \omega t$ will be
If g is acceleration due to gravity on earth's surface, the gain in potential energy of an object of mass m raised from surface of earth to a height equal to radius R of the earth is:
A ball is projected upwards from a height $h$ above the surface of the earth with velocity $v$. The time at which the ball strikes the ground is
In rear-wheel drive cars, the engine rotates the rear wheels and the front wheels rotate only because the car moves. If such a car accelerates on a horizontal road, the friction:
  1. On the rear wheels is in the forward direction.
  2. On the front wheels is in the backward direction.
  3. On the rear wheels has larger magnitude than the friction on the front wheels.
  4. On the car is in the backward direction.
A particle executes a simple harmonic motion of time period $T$. Find the time taken by the particle to go directly from its mean position to half the amplitude