NEET | 2017Work, Power and EnergyHard
Question
A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be :-
Options
A.
450
B.
1000
C.
1800
D.
225
More Work, Power and Energy Questions
A bullet is fired form a riffle. if the riffle recoils freely, the n the kinetic energy of the riffle will be :...A particle of mass m is moving in a circular path of constant radius r such that its centrip-etal acceleration ac is var...A scooter (m = 40 kg) having velocity 4 m/s collides with another scooter (m = 60 kg) having velocity 2 m/s. If the coll...An object of mass 0.2 kg executes simple harmonic motion along x-axis with frequency of 25/π Hz. At the position x ...A constant force F is applied to a body of mass m moving with initial velocity u. If after the body undergoes a displace...