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Optics
A concave mirror of focal length 'f1' is placed at a distance of 'd' from a convex lens of focal length 'f2'. A beam of light coming from infinity and falling on this convex lens-concave mirror combination returns to infinity. The distance 'd' must equal :
(1) 2f1 + f2
(2) –2f1 + f2
(3) f1 + f2
(4) –f1 + f2
(1) 2f1 + f2
(2) –2f1 + f2
(3) f1 + f2
(4) –f1 + f2
Optics
In an experiment to determine the focal length of a convex lens, 1/u
was plotted on horizontal and 1/v
was plotted on horizontal and 1/v
Optics
Which of the following is correct about tracing ray diagrams with curved mirrors
Optics
Which of these is NOT a useful precaution in an optical experiment?
Optics
Find the position and magnification,m,of the image formed by a concave mirror of focal length 24 cm when an object is placed 40 cm from the mirror given that m is
Optics
Find the position and magnification, m, of the image formed by a concave mirror of focal length 24 cm when an object is placed 40 cm from the mirror given that m is V/U
Optics
an astronomical telescope has a length of 105cm,and its magnification is 6 determine the power of objective and eye piece?
Optics
focus of concave mirror is virtual or real
Optics
a transparent bag filled with air forms a concave lens when it is immersed in water it behaves as?
Optics
An estimate of the refractive index of glass is 1.5. If the angle of incidence is
30o
the angle of refraction is
19o
60o
35o
70o
30o
the angle of refraction is
19o
60o
35o
70o
