সমতলে বস্তুকণার গতি (Motion of particles in a plane) MCQs
Showing 50 questions (Total: 1241)
y=lnxx হলে, dydx=?
Correct Answer:
ক: 1-lnxx2
1-ωω2-ωω21ω21-ω=কত?
Correct Answer:
A: -4
10 m/sec বেগে ঊর্ধ্বগামী কোন বেলুন হতে একটি পাথরের টুকরো ফেলে দেয়ার 10 sec পর মাটিতে পড়ে। পাথরটি ফেলে দেয়ার সময় বেলুনের উচ্চতা কত ছিল?
Correct Answer:
খ: 390 m
A=1i-i1 ও B=1-i-i-1 হলে AB=?
Correct Answer:
B: 0000
Explanation:
A=1i-i1 ও B=1-i-i-1 হলে AB=? Correct Answer 0000 ব্যাখা: AB=A×B=1i-i1×i-1-1-i=1-i-1-i2-i2-11-i=0-1+11-10 [ যেহেতু i2=-1]=0000
A+B+C¯ B¯C এর সরলীকরণ হলো-
Correct Answer:
ক: A¯BC
A=123456789 এবং B=012345 হলে A+B=?
Correct Answer:
D: অসম্ভব
ddxx2x2-4=কত?
Correct Answer:
A: -8x (x2-4)2
y=logxa5 হলে, dydx = কত?
Correct Answer:
ঘ: -5 ln a(x ln x)2
যদি α=-1+-32 এবং β=-1--32 হয়, তবে এদের সম্পর্ক কী?
Correct Answer:
খ: α=β2
দ্বিমিক সংখ্যা 1011101 এর সমমান দশভিত্তিক সংখ্যা কোনটি?
Correct Answer:
ক: 93
যদি P=100010001 হয়, তবে p2+2p= ?
Correct Answer:
C: 3p
A=2-315 B=132-1 হলে A,B হবে-
Correct Answer:
C: -4911-2
যদি A=i00i হয় তবে A2= ?
Correct Answer:
B: -100-1
1200Kg ওজনের একটি গাড়িকে 150N বলে ঠেলা হল। গাড়িটি স্থির অবস্থান হতে 112ms-1 গতি পেতে কত সময় লাগবে?
Correct Answer:
ঘ: 12sec
যদি P=100010001 হয় ,তবে p2+2p=?
Correct Answer:
C: 3p
If x2+3=x3+4, x=?
Correct Answer:
D: 6
If 9 men or 15 women can do a work in 16 days, how long it take 3 men and 7 women to complete the job?
Correct Answer:
D: 20
Explanation:
If 9 men or 15 women can do a work in 16 days, how long it take 3 men and 7 women to complete the job? Correct Answer 20 9 men = 15 Women = 16 days 3 Men = 5Women So 3Men & 7 Women = 12 Women 15 Women can do the work in 16 days 12 Women can do the work in 15 x 16 / 12 = 20 days Ans
If A : B=1 : 2, B : C=4 : 3 and A + B + C = 630 What is the value of A?
Correct Answer:
A: 140
Explanation:
If A : B=1 : 2, B : C=4 : 3 and A + B + C = 630 What is the value of A? Correct Answer 140 A : B = 1 : 2, B:C = 4 : 3, A + B + C = 630B is common integer, so we have to equal BNow, A : B = 2 : 4, B : C = 4 : 3 A : B : C = 2 : 4 : 3 A = 2 x 630 / 9 = 140 Ans
A pice of rope is cut into three section so that the first section is three times so long as the third. What fraction of the entire piece is the smallest section?
Correct Answer:
D: 113
You can now purchase 5 more bananas with Tk 75 due to reduction in price by 20%. What is the current price of one dozen of bananas?
Correct Answer:
D: 36
Explanation:
You can now purchase 5 more bananas with Tk 75 due to reduction in price by 20%. What is the current price of one dozen of bananas? Correct Answer 36 For Tk.100 reduction in price Tk.20For Tk.75. " " " (20 * 75)/100Price of 5 mangoes is tk 15" " 12 " " (15 * 12)/5 = Tk.36
What is 10% y3, If 2y3 is 10% of 600
Correct Answer:
C: 3
Which of the following is a solution to x2 + x =1
Correct Answer:
A: -1±52
If ax+xa=xb+bx then x=?
Correct Answer:
B: ±ab
If a copier makes 3 copies every 4 seconds then continues at this rate, how many minutes will it take to make 9,000 copies-
Correct Answer:
C: 200
Of 10 consecutive numbers, Sum of the first five is 560 what will be sum of the last 5 numbers?
Correct Answer:
A: 585
If k is the average of 10 and-14, then the average of k and - 8 is -
Correct Answer:
D: -5
What is the greatest positive integer n such that 2n is a factor of 1210 ?
Correct Answer:
C: 20
The area of a 2 feet wide wall around the garden that is 30 feet long and 20 feet wide is-
Correct Answer:
B: 216 sq ft
If x - y = 0 then xy =?
Correct Answer:
C: x2
The average age of A, B and C is 40 years, Then the sum of the ages of A and C is 85 years. Find the age of B.
Correct Answer:
B: 35 years
If p-1p=11 , then find the value of p+1p2
Correct Answer:
D: 125
Of following which one is greater than 12
Correct Answer:
B: 47
Two numbers differ by 7 and their product is 60. What are the two numbers?
Correct Answer:
A: 5 and 12
If the radious of a circle is increased by 6%, then the area of the circle is increased by-
Correct Answer:
C: 12.36 %
90 taka has been collected due to donation from each student by N 10 paisa, where N is the total number of students in a class. The number of student in that class-
Correct Answer:
C: 30
If x4-8x=1, x=?
Correct Answer:
B: -4, 8
The average age of a group of 12 students is 20 years, If 4 more students Join the group, the average age increases by 1 year, the average age of the new student is-
Correct Answer:
C: 24
If a-ba+b=2 and b=1 then a=?
Correct Answer:
D: -3
If a > b > c, then which of the followings must be true?
Correct Answer:
A: 2a > b + c
If 2 men or 3 women can do a piece of work in 42 days, then 6 men and 12 women to gather can finish it in-
Correct Answer:
B: 6 days
If n is an even integer which of the following must be an odd integer ?
Correct Answer:
A: n + 1
Which fraction is equal to 125 %
Correct Answer:
C: 54
If AB is negative, which of the following cannot be negative?
Correct Answer:
D: A2B2
X and Y are children of Z. Z is the father of X, but Y is not the sun of Z. How Y is related to Z?
Correct Answer:
D: Daughter
in figure x=?
Correct Answer:
C: 70°
What is the difference between the largest and smallest prime number from 40 to 100?
Correct Answer:
B: 56
Which of the following is the Prime factor of 96?
Correct Answer:
B: 2 and 3
A number is 25 more than its 25th . what is the number?
Correct Answer:
A: 1253
We get 96 of we take 12% of a number. What is the number?
Correct Answer:
C: 800
The number 0.127 is how much grater than , 18 ?
Correct Answer:
B: 1500