A Tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h/2. The velocity versus... View Article
Two points charges 4q and –q are fixed on the x-axis at x = -(d/2) and x = (d/2), respectively. If a third point charge 'q' is taken from... View Article
For a transverse wave travelling along a straight line, the distance between two peaks (crests) is 5m, while the distance between one crest and... View Article
A beam of plane polarised light of large cross-sectional area and uniform intensity of 3.3 Wm-2 falls normally on a polariser (cross sectional... View Article
Given figure shows few data points in a photo-electric effect experiment for a certain metal. The minimum energy for ejection of electron from... View Article
Blocks of masses m, 2m, 4m and 8m are arranged in a line on a frictionless floor. Another block of mass m, moving with speed v along the same... View Article
Particle A of mass mA=m/2 moving along the x-axis with velocity v0 collides elastically with another particle B at rest having mass mB=m/3. If... View Article
A wire A, bent in the shape of an arc of a circle, carrying a current of 2A and having radius 2 cm and another wire B, also bent in the shape of... View Article
1) 0.072 W 2) 0.10 W 3) 0.125 W 4) 0.50 W Answer: 2 PR = 0.5 W ⇒ i2R = 0.5 W Also, V = E – ir 2.5 = 3 – ir ⇒ir = 0.5 Power dissipated... View Article
A small bar magnet is moved through a coil at constant speed from one end to the other. Which of the following series of observations will be... View Article
A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque of 0.018 Nm. The minimum work required... View Article
When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm from the mirror. If the object is... View Article
