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Electrons are emitted from a photosensitive surface when it is illuminated by green light but electron emission does not take place by yellow light. Will the electrons be emitted when the surface is illuminated by (i) red light, and (ii) blue light.
Net force acting on particle of mass 2 kg is 10N in north direction.At t=o, particle was moving eastwards with 10m/s. Find displacement and velocity of particle after 2 seconds.
Non-Horizontally Launched Projectiles Assume a cannonball being launched at an angle from cannon atop an extremely high cliff. Suppose as well in which the cannonball does not
a ball is dropped from a bridge 122.5m high. after the ball has been falling for2 sec another is thrown straight downwards after it. the initial velocity of the ball is such that
Explain Friction Force (Ffrict) Force exerted by a surface as an object moves across it or makes an effort to move across it. There are 2 parts of friction force - sliding and
Q. What is ionisation potential energy? For hydrogen atom the energy necessary to remove an electron from first orbit to its outermost orbit (n=∞) is 13.6-0 = 13.6eV. This ene
People believe that seatbelts are a MUST. But they think that they could increase the risk of other road users. Explain why it would be difficult to gather evidence for this idea..
Q. The minimum wavelength of X-rays produced in a Coolidge tube is 0.05 nm. Find the operating voltage of the Coolidge tube. λmin = 12400 A 0 / V = 0.5 X 10 -10 m Theref
#queston.assigenent of oxalic acid
Roche limit: The position about a massive body where the tidal forces because of the gravity of the primary equivalent or exceed the surface gravity of a particular satellite.
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