CLASS 11 PHYSICS

MOST VERY  IMPORTANT QUESTION

FIXED PASS

-by aklearningnepal

Long Question (3 or 4 Marks)

Q.1) What is projectile? show that its path is parabolic and derive expression for maximum height, time of flight and horizontal range. (VVI)

 

Q.2) State the parallelogram law of vector addition. Derive expressions for the magnitude and direction of the resultant of two vectors inclined at an angle θ from each other.

 

Q.3) Define linear momentum. Show that principle of conservation of linear momentum can be verified by using Newton’s laws. (VVI)

 

Q.4) Define angle of friction and angle of repose. Establish a relation between them. 

 

Q.5) State that principle of conservation of energy and prove it?

 

Q.6) What is a conical pendulum? Obtain an expression for its time period. 

 

Q.7) Define centripetal force. Derive its expression.

 

Q.8) What is escape velocity? Derive an expression for it on the surface of the earth. (VVI)

 

Q.9) Explain Hooke’s law with necessary figure and derive and expression for the energy density in a stretched wire. (VVI)

 

Q.10) Relation between Alpha (α) , Beta (β) and Gamma (𝛾) . (VVI)

 

Q.11) Use method of mixture to determine the latent heat of vaporization with suitable diagram.

 

Q.12) What is meant by an ideal gas? Obtain the relation PV = nRT, where symbols have their usual meanings. (VVI)

 

Q.13) State and Explain Gauss theorem. Use Gauss theorem to obtain an expression for electric field of a linearly charged body. (VVI)

 

Q.14) Discuss the mechanism of metallic conduction and find the expression of drift velocity. 

Q.15) Derive the formula for the potential at a point due to a point charge. 

 

Q.16) Explain how Rutherford α- scattering experiment suggested that the nucleus of an atom is very small, very dense and positively charged. (VVI)

 

Short Question (1 or 2 Marks)

a. What are the variations of acceleration due to gravity? 

b. State work energy theorem. (VVI)

c. What is the significance of the negative value of gravitational potential energy? 

d. Friction Force is non conservative force. Justify

e. Differentiate between center of gravity and   center of mass. 

f. What is impulse? Give its relation with linear momentum.  

g. How does ‘g’ at a point vary with distance from the centre of the earth? Where is the highest value of g?

h. What is meant by specific latent heat of vaporization of water = 2.26 MJkg-1?

i. What is thermal Conductivity?  What does it mean? Wood has a low value of thermal conductivity. (VVI)

j. State and explain Stefan-Boltzmann’s law of black body radiation. (VVI)

k. Define coefficient of linear expansion. Does it depend on length? Explain. (VVI)

l. State and explain Newton’s law of cooling. Its Uses. (VVI)

m. Why is mercury used commonly as a thermometric?

n. Define temperature Gradient in an object?

o. Using kinetic molecular model of gas develop a relation between kinetic energy and temperature of gas. (VVI)

p. Define lateral shift. Write its expression. (VVI)

q. “A concave mirror is called converging  mirror.” Why?

r. State one daily application of convex mirror. (VVI)

s. Define ‘convex lens and concave lens’ and state one daily application of it. (VVI)

t. What must be the focal length and radius of curvature of the mirror?

u. Write down the lens maker’s formula and name the quantities associated in the formula. (VVI)

v. Discuss a theory of energy stored in a capacitor with mathematical expression. 

w. The potential difference between two points is 10 volts. What does it mean? 

x. Distinguish between nuclear fission and fusion.

y. Explain the significance of binding energy per nucleon?

z. What do you mean by mass defect and Binding energy? (VVI)

aa. All the nuclei have nearly the same density. Justify (VVI)

bb. A fusion reaction is more energetic than fission reaction. Justify.