JEE Main Test 9...

In a class of 60 students, if 25 students play cricket, 20 students play tennis and 10 students play both the games, then the number of students who play neither is

If α and β are two different complex numbers with |β| = 1, then

The point of intersection of lines represented by the equation 3x² + 8xy - 3y² + 29x - 3y + 18 = 0 is

Given that, I division on main scale corresponds to 0.5 degree. Total division on the vernier scale is 30 and match with 29 divisions of the main scale. The angle of the prism from the above data is

A person throws balls into air vertically upward in regular intervals of time of 1 s. The next ball is thrown when the velocity of the ball thrown earlier becomes zero. The height to which the balls rise is (assume, g =10 m/s²)

If the sum of the roots of the equation aχ² + 2χ + 3a = 0 is equal to their product, then value of a is

Arrange the following in the order of increasing mass. (Atomic mass of O = 16, Cu = 63, N = 14)

I. One atom of oxygen.

II. One atom of nitrogen.

III. 1 x 10^-10 mole of oxygen.

IV. 1 x 10^-10 mole of copper

The correct answer is

A small particle of mass m is projected at an angle θ with the X–axis with an initial velocity v_o in the X–Y plane as shown in the figure. At a time

A block moving on a surface with velocity 20 ms^-1 comes to rest because of surface friction over a distance of 40 m. The coefficient of dynamic friction is (take, g =10 ms^-2)