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An electric bulb is rated 220 V and 100 W.When it is operated on 110 V, the power consumed will be.Ans) P=V*II will be same in both casessoP1=V1*IP2=V2*IDividing both equations,P1/P2=V1/V2100/P2=220/110P2=50 (Ans)
A sprinter runs 100.0 m. If he travels at constant acceleration of 1.95 m/s2 for the first 6.00 s, and then at constant velocity for the remaining time, what was his average veloci
Two light rays will interfere constructively with maximum amplitude if the path difference between them is: a) one wavelength b) one-half wavelength c) one-qua
COMPARATOR EQUATION USED TO DETERMINE THE CONCENTRATION OF ELEMENTS
A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (C) Low permeability. (B) Low resistance. (D) High hyster
what is the importance of si unit
The statement ‘Charge is quantized’?
A sphere of radius R touches two adjacent sides of a room.It also touches an inclined plane at a height of R/5 from the floor.the inclined plane moves towards the sphere at the spe
Fizeau method (A. Fizeau, 1851): One of the first really relativistic experiments intended to calculate the speed of light. Light is flow through a spinning cogwheel driven th
A projectile is launched from zero height with an initial angle, θ, above the horizontal and with an initial velocity, vi. a. Show that the range of the projectile the distance
A test tube holder An appropriate test tube holder can be made by bending strong spring wire made of iron or brass into the shape shown in the diagram. Wire from a coat hanger
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