12th Physics , Chapter- 7, (Alternating Current ) 1. Wattless current is obtained in a circuit containing- (a) Inductor (b) Capacitor (c) (a) or (b) (d) both (a) & (b) (c) (a) or (b) Answer 2. AC generator works on the principle of- (a) Self induction (b) Photoelectric effect (c) Mutual induction. (d) None of …
11th Physics, Chapter- 15, (Wave) 1. When a pebble is dropped into a pond of still water what happens: (A) Particles moves (B) Wave moves (C) Pebble moves (D) Water moves (B) Wave moves Answer 2. What are the essential properties a medium must passes for propagation of mechanical waves ? (A) Stable pressure (B) …
11th Physics, Chapter- 14, (Oscillation) 1. Maximum displacement from equilibrium position is : (A) Amplitude (B) Frequency (C) Period (D) Wavelength (A) Amplitude Answer 2. Displacement – time graph depicting an oscillatory motion is: (A) Cosine curve (B) Sine curve (C) Tangent curve (D) Both (A) and (B) (D) Both (A) and (B) Answer 3. …
11th Physics, Chapter- 13, (Kinetic Theory) 1. Average kinetic energy of the molecules of a gas is directly proportional to: (A) Pressure (B) Volume (C) Temperature (D) None of these (C) Temperature Answer 2. In monoatomic gas molecules, degrees of freedom is: (A) 1 (B) 3 (C) 5 (D) 7 (B) 3 Answer 3. The …
11th Physics, Chapter- 12, (Thermodynamics) 1. Internal energy of an isolated system is : (A) Increases (B) Decreases (C) Remain same (D) None of these (C) Remain same Answer 2. The zearth law of thermodynamics leads to the concept of: (A) Internal energy (B) Heat content (C) Pressure (D) Temperature (D) Temperature Answer 3. First …
11th Physics, Chapter- 11, (Thermal Properties of Matter) 1. A pure substance would freeze or solidify at its : (A) Boiling point (B) Condensation point (C) Melting point (D) Sublimation point (B) Condensation point Answer 2. Heat is associated with: (A) Kinetic energy of random motion of molecules (B) Kinetic energy of orderly motion of …
11th Physics, Chapter- 10, (Mechanical Properties of Fluid) 1. Which of the following is not the unit of pressure? (A) Pascal (B) Torr (C) Nm 2 (D) N (D) N Answer 2. With the rise of temperature, the co-efficient of viscsity of gas: (A) Increases (B) Doesn’t change (C) Decreases (D) None of these (A) …
11th Physics, Chapter- 9, ( Mechanical Properties of Solids) 1. The ratio of the change in volume to the original volume of the body is known as: (A) Longitudinal strain (B) Volume strain (C) Shear strain (D) Original strain (B) Volume strain Answer 2. S.I. unit of compressibility is: (A) Nm² (B) Nm-² (C) Pascal-¹ …
11th Physics, Chapter- 8, ( Gravitation) 1. Kepler’s second law is the consequence of the law of conservation of : (A) Linear momentum (B) Energy (C) Angular momentum (D) Mass (C) Angular momentum Answer 2. Density of earth is about: (A) Times the density of water 5.5 (B) 2 times the density of water (C) …
11th Physics, Chapter- 7, ( System of Particles and Rotational Motion) 1. Torque acting an a body is the rotational analogue of: (A) Mass (B) Velocity (C) Force (D) Kinetic energy (C) Force Answer 2. Which of the following physical quantity is represented by the product of moment of inertia and angular velocity? (A) Torque …