Practice questions for physics

 

Here are some important questions for physics. You can practice it.

PRACTICE THESE QUESTIONS. 

1.State and explain the triangle law of vector addition. Also give the dimensional formula for specific heat capacity and  universal gravitational constant.

 

2.How Newton's third law is followed from the second law. Explain the principle of conservation of linear momentum using third law of motion.

 

3.Show that path followed by vertical projectile is parabolic in nature. Also give the expression for maximum height, horizontal range and time of flight.

 

4.Define the perfectly elastic and perfectly plastic body. Show that energy stored in the stretched wire is equal to ½ stretching force*extension.

 

5.convert -40*C into Fahrenheit scale. Give the relation between linear expansivity and cubical expansivity. Also derive the relation for the final length of a rod in terms of initial length. 

6.Define the black body. Perfectly black body can be realized in actual practice? Explain the Stefan Boltzmann law of black body radiation.

 

7.What do mean by converging lens? Derive the lens formula for both convex and concave lens.

 

8.Define the Guass law of electrostatics. Apply this theorem to find the electric field intensity of charged spherical conductor for all three cases.

 

9.Define the terms a) mass defect b)binding energy c)nuclear fission d)nuclear fusion. Explain why all the nuclei have their nearly same density. 

10.Convert 50gm of ice at -10*C to steam at 100*C. 

Hope this will help you a lot.

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