Physics Test 26...

The length, breadth and thickness of a rectangular sheet of metal are 4.234 m, 1.005 m, and 2.01 cm respectively. Give the volume of the sheet to correct significant figures.

Population of a town is reported as 157,900 (rounded to the nearest hundred). Which of the following statements is correct?

The product of energy and time is called action. The dimensional formula for action is same as that for

The Van der Waals equation for 1 mole of a real gas is

where P is the pressure, V is the volume, T is the absolute temperature, R is the molar gas constant and a and b are Van der Waal constants. The dimensions of a are the same as those of

A particle is projected with a velocity v, so that its range on a horizontal plane is twice the greatest height attained. If g is acceleration due to gravity, then its range is

The  range R of projectile is same when its maximum height are h₁ and h₂. What is the relation between R, h₁ and h₂?

A wheel is subjected to uniform angular acceleration about its axis. Initially its angular velocity is zero. In the first 2 sec, it rotates through an angle q1; in the next 2 sec it rotates through an additional angle θ₂, the ratio θ₂/θ₁ is

Two cars are moving in same direction with speed of 30 kmph. They are separated by a distance of 5 km. What is the speed of a car moving in opposite direction if it meets the two cars at an interval of 4 min?

A body starts from rest, the ratio of distances travelled by the body during 3^rd and 4^thseconds is :

The dimensional formula for acceleration is