Motion in a Straight Line — Physics STD 11 Science — Question

The mass of a body is measured by two persons is 10.2kg and 10.23kg. Which one is more accurate and why?

Two masses are in the ratio 1 : 5. What is the ratio of their inertia?

If the oscillation amplitude of a simple pendulum is reduced to half of its present value, then what will be the value of its time period?

A truck and a car with the same kinetic energy are brought to rest by the application of brakes which provide equal retarding forces. Which of them will come to rest in a shorter distance?

Fill in the blanks:
The surface area of a solid cylinder of radius 2.0cm and height 10.0cm is equal to ...(mm)²

Choose the correct alternative:
Acceleration due to gravity is independent of mass of the earth/ mass of the body.

A glass plate of length 10cm, breadth 4cm and thickness 0.4cm weighs 20g in air. It is held vertically with long side horizontal and half the plate immersed in water. What will be its apparent weight? Surface tension of water = 70 dyne/cm.

Value of g is largest at the poles due to _________.

When a bus in which passengers are travelling takes a sudden turn, why does the passenger falls outwards?

Why do the fan blades continue to move for some time even after switching off the electricity?