Exam 21: Physics and Measurement

When light enters from vacuum in to glass, it's velocity

intensity of sun's radiation is about {{}}

Speed of electromagnetic radiation is independent of

Calipers are used to measure the

A measurement which on repetition gives same or nearly same result is called

Particles vibrate about their mean positions and transfer

Increase in kinetic energy of car having mass 800 kg and velocities ranging from 20 m s^-1 to 30 m s^-1 is {{}}

While taking the reading, the line of sight should be

As wave travels, intensity

In potential dividers, the output voltage depends upon the

Internal resistance of cell when there is current of 0.40 A when a battery of 6.0 V is connected to a resistor of 13.5 Ω is

Barrel of screw gauge has

A motor of the lift provides a force of 20 kN which rises it by 18 m in 10 s, the output power of motor is

Waves that move through materials are called

Smallest division on stopwatch is

Least count of screw gauge is

Mechanical waves include

A complete cycle of wave is around

Phase difference is measured in

Changing magnetic field induces