Q5. Two masses, each 5 kg, are attached to the two ends of a spring of spring
constant 40 N/m. The masses are pulled
away from each other and the spring gets
stretched by a length 20 cm . Work done
by the spring on each mass, is

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

b.a device that inputs heat into a cool object

prndulum needs thread, weight clock to time swings