Related Questions

A circular frame with a width of 2 inches surrounds a circular photo with a diameter of 8/ inches Assuring that the area of the frame does not overlap the area of the photo what is the area of the frame?
A 8 pie
B 20pie
C 25pie
D 11 pie
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in
A Light intensity
B Current
C Flux density
D Voltage
একটি ধাতব তলে λ তরঙ্গদৈর্ঘ্যের একবর্ণী আলোকরশ্মি আপতিত হলে ফটো-ইলেক্ট্রন নির্গত হয় এবং এক্ষেত্রে বিভবের মান 3Vo একই তলে যখন 2λতরঙ্গদৈর্ঘ্যের একবর্ণী আলো আপতিত হয়, তখন নিবৃত্তি বিভবের মান Vol ফটো-ইলেক্ট্রন নির্গত হওয়ার জন্য ঐ তলটির সূচন তরঙ্গদৈর্ঘ্যের মান নির্ণয় কর।(A monochromatic light of wavelength λ is incident on a metallic surface then ejects photo-electron and the value of stopping potential is 3Vo. When the same surface is illuminated by a light of wavelength 2λ., the stopping potential becomes Vo. Calculate the threshold wavelength for this surface to eject photo electrons.)
A 6λ
B 8λ
C 4λ3
D λ
E 4λ
Photo conductive cell consists of a thin film of
A Quartz
B Lithium sulphate
C Barium titanate
D Selenium
What is the least common multiplier of the numbers 27, 4, 6, 9 and 8?
A 261
B 216
C 1944
D 1494
The multiplier and the meter coil in a voltmeter are in
A Series
B Parallel
C Series-parallel
D None of the above
My roommate has the photo of a famous tennis player on a wall. (In each of the following there is one word missing. Your task is to identify the missing word from the given choices.)
A hunged
B hung
C hanged
D hang
The passive form of the sentence 'I had already shown her photo to the policeman' should be
A The policeman was already shown her photo
B Her photo was already been shown to policeman
C The policeman had already been shown her photo
D The policeman have already been shown her photo
Photo-editing, word-processing and spreadsheet are examples of which of the following ?
A Platform software
B System Software
C Operating Software
D Application Software
The passive form of the sentence 'I has already shown her photo to the policeman' should be:
A The policeman was already shown her photo.
B Her photo was already been shown to policeman
C The policeman had already been shown her photo.
D The policeman have already been shown her photo.

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