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You are given 3 lenses l1,l2,l3 each of focal length 20 an object at 40cm in front of l1.the final real image is formed at focus i ofl3,find separation between l1,l2,l3 ?Ans) between l1&l2 its 60 & between l2&l3 it can be any value...........for l3 to form image at i, the object must be at infinity, and for that, image formedby l1 must be at the focus of l2,and also image formed by l1 is 40 cm ahead of l1, i.e., the focus of l2(20 cm)so, distance between l1 and l2 is 40+20=60 cm........
Calculate the overall heat-loss coefficient for a solar collector with a single glass cover having the following specifications (neglect edge effects): Spacing between the plate
I just really don''t get the homework
a. Measure the force among two linear, parallel, long conductors carrying currents in opposite direction. b. Measure self inductances and mutual inductances among two co-axial s
A merry-go-round in the park has a radius of 2.6 m and a moment of inertia of 1773 kg.m 2 What is the mass of the merry-go-round?
The proton and neutron are collectively called as: (1) Deutron (2) Positron (3) Meson (4) Nucleon Ans: (4) Nucleon
What affect does electricity have on soil? Electrical current and ions can cause definite molecules (and moisture) to adhere to soil. Large amounts of current, like a lightning
applications of nicol prism?
Determine the compression force exerted on the can for an applied force of P46 N applied at D at the angle P47 to the vertical as shown. There are two links for AB and two linkage
CENTRE OF GRAVITY: Consider a body as an accumulation of many small masses (molecules), all subject to gravitational attraction. The total weight, which is a force , is
calour formed in pure and impure spectrum
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