Related Questions

একটি দ্বি-উত্তল অভিসারি লেন্সের প্রত্যেক পৃষ্ঠের বক্রতার ব্যাসার্ধ 30cm এবং গ্লাসের প্রতিসরাঙ্ক 1.50। লেন্সটির ফোকাস দৈর্ঘ্য কত হবে? (The radius of curvatures of both surfaces of a double convex lens are 30cm each and refractive index of glass is 1.50. What will be focal length of the lens?)
A 15 cm
B 30 cm
C 45 cm
D 60 cm
Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?
A -4.33 diopters
B 12.33 diopters
C -12.33 diopters
D 4.33 diopters
If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be
A f sin θ
B f cos θ
C f tan θ
D f sec θ
Identify the error : In the fifteenth century , Leonardo da Vinci suggested that defective Vision (i) "can be corrected by" (ii) "placing a" lens (iii) "indirect contact (iv) "with the eye.
A (i)
B (ii)
C (iii)
D (iv)
'To see eye to eye with' idiom- টির সঠিক অর্থ ----
A To agree
B To stare fixedly
C To be angry
D To take revenge
Raj and Riaz have never seen eye to eye on politics. A sentence is given in each question and some portion of it is bracketed. You have to find out the meaning of the bracketed portion of the sentence from the options given.
A sharing the same view
B disagreement partly
C intimacy
D enmity
Karim has asked for a transfer because he does not "see eye to eye" with his new manager.
A to agree with someone
B to get into a quarrel
C to reject someone
D to plan together
If you ' see eye to eye ' with someone you ____them.
A oppose
B encourage
C agree with
D compelete
‘To see eye to eye with’ means -
A to disagree
B to agree
C to be angry
D to be pleased
I do not believe in an eye for an eye.
A I do not believe in exchanging glances
B I do not believe what see
C I do not believe in equal exchange
D I do not believe in punishment equal

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