हैरान कर देने वाले 10 गजब तथ्य | 10 Amazing Facts | Random Facts In Hindi | #shorts

Biology के हैरान कर देने वाले FACTS

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

Two planets of equal mass orbit a much massive star (figure). Planet m_(1) moves in circular orbit of radius 1 xx 10^(8) km with period 2 yr . Planet m_(2) moves in an elliptical orbit with closed distance r_(1) = 1 xx 10^(8) km and farthest distance r_(2) = 1.8 xx 10^(8) km , as shows. (a) Using the fact that the mean radius of an elliptical orbit is the length of the semi-major axis, find the period of m_(2)'s orbit. (b) Which planet has the greater speed at point P ? Which has the greater total energy? (c ) Compare the speed of planet m_(2) at P with that at A .

A vertical steel beam at the base of buiolding is 6.0 m tall, thas a mass of 300 kg, and supports a load of 3.0xx10^(5)N . If the beam's temperature decreases by 4.0^(@)C , calculate the change in its internal energy using the facts that for steel c_(p) is 0.11 "kcal"//kg^(@) and the coefficient of the linear expansion is 11xx10^(-6).^(@)C^(-1)

Class 10 Maths (Hindi) | Chapter 3 | दो चर वाले रैखिक समीकरण युग्म | Important Questions | Quick Revision

In a class,30% of the students offered English,20% offered Hindi and 10% offered both.If a student is selected at random,what is the probability that he has offered English or Hindi? (2)/(5) (b) (3)/(5) (c) (3)/(4) (d) (3)/(10) (e) None of these

In a X th standard examination out of the 100 students appeared 50 passed in all the subjects, 20 passed in science subjects only and 10 passed in languages only. All the remaining students failed in all subjects. Which of the following represents this fact?

Density of a unit cell is respresented as rho = (" Effective no. of atoms (s)" xx "Mass of a unit cell ")/("Volume of a unit cell ")=(Z.M)/(N_(A).a^(3)) where , mass of unit cell =mass of effectuive no . of atoms(s) or ion (s). M= At . mass// formula N_(A) = Avogadro' s no . rArr 6.0323 xx 10^(23) a= edge lemght of unit cell Silver crystallizes in a facts lattice and has a density of 10.6 g//cm^(3) . What is the length of a edge of the unit cell ?