Last Updated On [03-11-2023]
An astronomical telescope has a magnifying power 10, the focal length of the eye-piece is 20 cm. The focal length of the objective is
a)
b)
c)
200 cm
d)
2 cm
An astronomical telescope has a magnifying power 10, the focal length of the eye-piece is 20 cm. The focal length of the objective is
a)
b)
c)
200 cm
d)
2 cm
Question ID - 152246 :-
An astronomical telescope has a magnifying power 10, the focal length of the eye-piece is 20 cm. The focal length of the objective is
a)
b)
c)
200 cm
d)
2 cm
|
An astronomical telescope has a magnifying power 10, the focal length of the eye-piece is 20 cm. The focal length of the objective is |
|||||||
|
a) |
|
b) |
|
c) |
200 cm |
d) |
2 cm |
Next Question :
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A colourless gas G1, produced on treating conc. H2SO4 with common salt is introduced into one end of a glass tube. Through the other end, another pungent smelling colourless gas, G2 of molecular mass 17 is introduced. A white sublimate, S is produced inside the tube. Which of the following statements is wrong? |
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|
(a) |
Both the gases G1 and G2 are water soluble |
(b) |
Sublimate S1 contains covalent bond and ionic bond |
|
(c) |
Sublimate, S when treated with caustic soda liberates G2 gas |
(d) |
Aqueous solution of each G1 and G2 gas is acidic in nature |
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