The sun subtends an angle a half a degree at the pole of a concave mirror which has a radius of curvature of 15 m.Then the size(diameter) of the image of the sun formed by the concave mirror is :

a) 3.5 cm

b) 13.1 cm

c) 7.5 cm

d) 6.55 cm

Question

The sun subtends an angle a half a degree at the pole of a concave mirror which has a radius of curvature of 15 m.Then the size(diameter) of the image of the sun formed by the concave mirror is :

a) 3.5 cm

b) 13.1 cm

c) 7.5 cm

d) 6.55 cm

mayankdevnani · Answer

@primeralph  and   @experimentX

primeralph · Answer

Using tan (1/2), find the other lengths.
I'm tired. Going to bed.

mayankdevnani · Answer

plz don't go!!! first solve and then get sleep and you will be very happy that i help mayank with 2 questions and he also write testimonial

experimentx · Answer

what's the pole of concave mirror.

mayankdevnani · Answer

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pole of a concave mirror means the middle part of concave mirror.