Perfectly black body radiates the energy 18 J/s at 300K. Another ordinary body of e=0.8
Perfectly black body radiates the energy 18 J/s at 300K. Another ordinary body of e=0.8 having same are at 500K…
8 years ago
Questions
A black body is at 727⁰C. It emits energy at a rate which is proportional to
A black body is at 727⁰C. It emits energy at a rate which is proportional to Options (a) (1000)⁴ (b)…
8 years ago
The displacement of an object attached to a spring and executing simple harmonic
The displacement of an object attached to a spring and executing simple harmonic motion is given by x=2x10⁻² cos πt…
8 years ago
One-fourth length of a spring of force constant K is cut away. The force constant
One-fourth length of a spring of force constant K is cut away. The force constant of the remaining spring will…
8 years ago
Moment of inertia of a uniform circular disc about a diameter is I. Its moment
Moment of inertia of a uniform circular disc about a diameter is I. Its moment of inertia about an axis…
8 years ago
From a disc of radius R, a concentric circular portion of radius r is cut-out so
From a disc of radius R, a concentric circular portion of radius r is cut-out so as to leave an…
8 years ago
Two cars A and B moving with same speed of 45 km/hr along same direction.
Two cars A and B moving with same speed of 45 km/hr along same direction. If a third car C…
8 years ago
A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed
A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed…
8 years ago
A particle is moving in a circle with uniform speed v. In moving from a point to another
A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite…
8 years ago
A cricketer can throw a ball to a maximum horizontal distance of 100 m. With the same
A cricketer can throw a ball to a maximum horizontal distance of 100 m. With the same effort, he throws…
8 years ago