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গরম বাতাসে পরিপূর্ণ M ভরের একটি বেলুন (থ্রডি সহ) পৃথিবীর দিকে খুব ত্বরণ a তে নেমে আসছে। ঝুড়ি থেকে কি পরিমান m ভর ফেলে দিলে বেলুনটি উপরের দিকে একই খুব ত্বরন a- তে উঠে যাবে ? সকল ক্ষেত্রে বেলুনটির আয়তন একই ছিল বলে ধরে নেওয়া হলো। (g = অভিকর্ষীয় ত্বরন)(A hot air balloon with a bucket is descending towards the earth with a constant acceleration a. The combined mass of the balloon and bucket is M. What mass m from the bucket should be released so that the balloon starts ascending up with the same acceleration a? Consider the volume of the balloon remains constant at all the time. (g=acceleration due to gravity))
A m=2ag+aM
B m=g+a2M
C m=2ag M
D m=M2a(g+a)
E m=ag+M
Kick's law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick's constant is
A KW. sec/kg
B KWh/kg
C KWh/sec. kg
D Kg/sec
The meaning of the idiom : ' To kick the bucket ' -
A Discourage
B Die
C Useless argument
D Noise
The correct meaning of 'To kick the bucket' means
A quarrel
B die
C neglect
D begin
12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
A 8
B 15
C 16
D 18
'To kick the bucket' means to---
A quarrel
B die
C neglect
D begin
'to kick the bucket'-এর সাথে সামঞ্জস্যপূর্ণ শব্দবন্ধ-
A পটল তোলা
B লক্ষভেদী
C একগুয়েঁমি
D হা-ভাতে
The idioms 'to kick the bucket' means- 
A to die
B to quarrel
C to begin
D to neglect
An empty bucket being filled with paint at a constant rate takes 6 min to be filled to 7/10 of its capacity. How much more time will it take to fill the bucket to full capacity?
A 18/7
B 20/7
C 20/14
D 18/14
A tank that was 10% full was emptied into a 50-litre bucket.If the oil now fills 40% of the bucket’s volume. Then what is half of the capacity of the tank in liters?
A 50 liters
B 100 liters
C 150 liters
D 200 liters

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