Related Questions

The device which measures earthquakes is called the Richter scale.
A prevents
B weighs
C gauges
D calculates
Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale.
A Kelvin
B Centigrade
C Fahrenheit
D Reaumer
An engineer's scale would be used to measure lines on a drawing where the scale factor reads ________.
A $${\frac{1}{4}^{''}} = {1^{'}}{\text{ - }}{0^{''}}$$
B $${\frac{1}{8}^{''}} = {1^{'}}{\text{ - }}{0^{''}}$$
C $${1^{''}} = {100^{'}}$$
D $${\frac{3}{4}^{''}} = {1^{'}}{\text{ - }}{0^{''}}$$
A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory . There are 100 seniors, 150 juniors and 200 sophomres who applied. Each senior's junior's name , 2 times; and each sophomres who applied. Each senior's name is placed in the lottery 3 times; each junior's name ,2 times name, 2 times ; and each sphomore's name , 1 time . What is the probability that a senior's name will be chosen?
A 18
B 38
C 48 
D 28
Two forces of magnitude 3m and 2m respectively have a resultant R. if the first force is doubled, the magnitude of the resultant is doubled.Find the angle betuween forces?
A 90°
B 120°
C 135°
D 145°
q মানের পাঁচটি ধনাত্নক চার্জ r ব্যাসার্ধের একটি বৃত্তের পরিধি বরাবর প্রতিসমভাবে সাজানো হলো। বৃত্তের কেন্দ্রে বৈদ্যুতিক ক্ষেত্রের মান কত? (Five positive charges of magnitude q are arranged symmetrically along the circumference of a circle of radius r. What is the magnitude of the electric field at the center of the circle?)
A q44πε0r2
B q54πε0r2
C 5q4πε0r2
Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
A Its longer side
B Its shorter side
C The diagonal of the parallelogram which does not pass through the point of intersection of the forces
D The diagonal of the parallelogram which passes through the point of intersection of the forces
For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is
A $$\frac{{\text{m}}}{{\text{N}}}$$
B $$\frac{{\text{m}}}{{{\text{N}} + 1}}$$
C $$\frac{{{\text{N}} + 1}}{{\text{m}}}$$
D $$\frac{{\text{N}}}{{{\text{m}} + 1}}$$
If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be
A 2T
B $$\frac{1}{2}{\text{T}}$$
C $$\sqrt 2 {\text{ T}}$$
D 3T
With which device are earthquakes recorded ?
A Barometer
B Oscillator
C Voltmeter
D Seismograph

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