Related Questions

3/4th of square were taken to form shape A and the rest was made to form shape B. Shape A was divided into four equal squares (Shape C), what will be the ratio of the one shape C to one shape B.
A 1:4
B 3:16
C 1:2
D 3:4
If S is the sum of three angles of a spherical triangle, the spherical excess equals
A S - 90°
B S - 180°
C S - 270°
D S - 360°
The potential energy of a particle falling through a straight shaft drilled through the earth (assumed homogenous and spherical) is proportional to (where r is the distance of’the particle from centre of the earth)
A log r
B r
C r2
D $$\frac{1}{{\text{r}}}$$
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by
A Diffusion within the pellet
B Reaction
C External mass transfer
D None of the above
Spherical shape of mercury droplets is due to its
A High viscosity
B Low surface tension
C High density
D High surface tension
If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is
A $$\frac{{\pi {{\text{R}}^2}{\text{E}}}}{{{{90}^ \circ }}}$$
B $$\frac{{\pi {{\text{R}}^2}{\text{E}}}}{{{{180}^ \circ }}}$$
C $$\frac{{\pi {{\text{R}}^2}{\text{E}}}}{{{{270}^ \circ }}}$$
D $$\frac{{\pi {{\text{R}}^2}{\text{E}}}}{{{{360}^ \circ }}}$$
A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?
A 15\/4 W
B 16\/9 W
C 16\/7 W
D 16\/15 W
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth's early life and solidified into hard rock's called
A granite
B basalt
C igneous rocks
D sedimentary rocks
চাঁদের অভিকর্ষজ ত্বরণ পৃথিবীর অভিকর্ষজ ত্বরণের ছয় ভাগের এক ভাগ। চাঁদের ব্যাসার্ধ পৃথিবীর ব্যাসার্ধের এক- চতুর্থাংশ। পৃথিবীর ভর M-এর তুলনায় চাঁদের ভর কত? (The acceleration due to gravity on the Moon is one-sixth of that on the Earth. The radius of the Moon is one-fourth that of the Earth. What is the mass of the Moon compared to that of the Earth, M?)
A M/6
B M/16
C M/24
D M/96

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