Question
What is the SI unit of luminous
flux?Solution
The SI unit of luminous flux is the lumen (lm), which measures the perceived power of light.
Which of the following is a nonrenewable source of energy? Â
What is the main difference between alternating current (AC) and direct current (DC)? Â
Hyperrnetropia or longsight can be corrected by using :
A car accelerates from 20 m/s to 40 m/s in 10 seconds. What is its acceleration?
A negative test charge is released in a non-uniform electric field. It moves towards a region of:
The unit of measurement of noise is –
A cube of side a encloses a point charge q at its center. What is the electric flux through one of its faces?
What is the momentum of a 2 kg object moving at 3 m/s? Â
An object moves towards a convex lens of focal length 20 cm with a velocity of 5 cm/s. When the object is at 30 cm from the lens, find the rate at which...
Boyle’s Law is applicable to gases under which conditions?
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