Why do females have a lower center of gravity than males?
Females have a lower centre of gravity than males because they are generally shorter than men and have smaller bones... View Article
Latest Posts
If x > 0, y > 0, z > 0, xy + yz + zx < 1 and tan-1 x + tan-1 y + tan-1 z = π, then x + y + z is equal to
1) 0 2) xyz 3) 3xyz 4) √(xyz) Solution: (2) xyz tan-1 x + tan-1 y + tan-1 z =... View Article
If sin-1 (x / 13) + cosec-1 (13 / 12) = π / 2, then the value of x is
1) 5 2) 4 3) 12 4) 11 Solution: (1) 5 sin-1 (x / 13) + cosec-1 (13 / 12)... View Article
Given 0 ≤ x ≤ 1 / 2, then the value of tan [sin-1 {(x / √2) + (√1 – x2) / (√2)} – sin-1 x] is
1) 1 2) √3 3) – 1 4) 1/√3 Solution: (1) 1 Given, for 0 ≤ x ≤ 1 /... View Article
If sin-1 a + sin-1 b + sin-1 c = π, then the value of a√(1- a2) + b √(1 – b2) + c√(1 – c2) will be
1) 2abc 2) abc 3) (1 / 2) abc 4) (1 / 3) abc Solution: (1) 2abc Let sin-1 a... View Article
Summation from m=1 to n tan-1 (2m) / (m4 + m2 + 2) =
1) tan-1 [n2 + n] / [n2 + n + 2] 2) tan-1 [n2 – n] / [n2 – n... View Article
The value of tan [cos-1 (4 / 5) + tan-1 (2 / 3)] is
1) 6 / 17 2) 7 / 16 3) 16 / 7 4) none Solution: (4) none tan [cos-1 (4... View Article
If tan-1 (a / x) + tan-1 (b / x) = π / 2, then x is equal to
1) √ab 2) √2ab 3) 2ab 4) ab Solution: (1) √ab tan-1 (a / x) + tan-1 (b / x)... View Article
If cos-1 x > sin-1 x, then
1) (1 / √2) < x ≤ 1 2) 0 < x < 1 / √2 3) – 1 ≤ x... View Article
The greatest and least values of (sin-1 x)2 + (cos-1 x)2 are respectively
1) π4 / 4 and 0 2) π / 2 and – π / 2 3) 5π2 / 4 and... View Article
For the function f (x) = (4 / 3) x3 – 8x2 + 16x + 5 is a point of
1) Local maxima 2) Local minima 3) Point of inflexion 4) None of these Solution: (3) Point of inflexion f... View Article
Can two identical and independent sodium lamps act as coherent sources?
No, the two identical and independent sodium lamps do not act as coherent sources because the phase difference between waves... View Article
Can two different bulbs similar in all respects act as coherent sources?
No, the two independent bulbs will not act as coherent sources because they won’t possess stable constant phase difference.
At what point will the electric field of a charged object be strongest?
The electric field of a charged object will be strongest where the electric field lines are the closest.
Can you measure latent heat with a thermometer?
The latent heat cannot be measured with a thermometer. A thermometer measures only the sensible heat. Similar Reading: Latent Heat... View Article
Which earthquake wave is more dangerous?
S waves have greater amplitude and produce vertical and horizontal motion of the ground surface and are more dangerous than... View Article
What is the range of voltmeter?
The range of practical voltmeter ranges between 1000 to 3000 volts. Understand what makes the voltmeter different from the ammeter... View Article
Which has more surface tension oil or water?
Water has higher surface tension. Water has a surface tension of 72 dynes/cm, and oil has a surface tension of... View Article
Which of the following produces uniform electric field?
a) Linear Charge b) Point Charge c) Two Parallel Plates d) Charge distributed on a circular plot Answer: c) Two... View Article
Which state of matter is most affected by temperature change?
Gases are most affected by temperature change. Among all the states of matter, gases have the highest kinetic energy and... View Article
