Related Questions

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.)
ক 6λ
খ 8λ
গ 4λ3
ঘ λ
ঙ 4λ
Fill in the gap with the appropriate word : We hurried ---- we should miss the train.
ক or
খ otherwise
গ lest
ঘ than
I____ caught the bus if i had hurried
ক could have
খ can have
গ can not have
ঘ could not have
Justice hurried is Justice buried' Here the second Justice is -
ক Verb
খ Adjective
গ Adverb
ঘ Noun
'Justice hurried is Justice buried' Here the second Justice is -
ক Verb
খ Adjective
গ Adverb
ঘ Noun
A sewer running partially full and hurried with back filled, fails in compression due to
ক Weight of the pipe
খ Weight of the back fill
গ Superimposed traffic loads
ঘ All the above
Choose the correct sentence quotation part : Keeping to the high roads, running as fast as she could, "as well as not stopping for rest," allowed her to make the trip in record time.
ক as well as not stopping for rest
খ and not stopping rest
গ not stopping for rest
ঘ stopping not for rest
The members of a club participate in at least one game. Twenty of them play football, 10 play cricket, 12 play hokey. Three of them play cricket only, 4 of them play both the cricket and football but not hockey, 2 of them participate all games. How many people play both cricket and hockey but not football?
ক 1
খ 2
গ 3
ঘ None of these
Fill in the blank He ran 10 Kilometers -- stopping .
ক often
খ seldom
গ without
ঘ continuously
Train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is :
ক 100 kmph
খ 110 kmph
গ 120 kmph
ঘ 130 kmph

Next steps