Physical World and Measurement

Download a simple test paper from Class XI Physics.

Topic – Physical World and Measurement

Download Here Test on Physical World and Measurement

Categories: CBSE Physics   Tags:

Work, Power, Energy & Human Powered Aircraft

Human-powered aircraft require a pilot to pedal, as in a bicycle, and produce a
sustained power output of about 0.30 hp.

The Gossamer Albatross flew across the English Channel on June 12, 1979, in 2h 49 min.

(a) How much energy did the pilot expend during the flight?

(b) How many Snickers candy bars (280 Cal per bar) would the pilot have to consume to be “fueled up” for the flight?

[Note: The nutritional calorie, 1Cal, is equivalent to 1000 calories (1000 cal) as defined in physics. In addition, the conversion factor between calories and joules is as follows: 1Cal = 1000 cal = 1 kcal = 4186 J. ]

Categories: Mechanics   Tags: , , ,

Charge moving in a magnetic field

A particle of mass m with charge  q moving with uniform speed v normal to a uniform magnetic field describe a circular path of radius r. Derive expression for (1)time period of revolution and (11) kinetic energy of the particle.?

Categories: CBSE Physics   Tags: