Miscellaneous

1. NOT Gate can be operated by– (A) Single diode (B) Two diodes (C) Single Resistor (D) Single Transistor Ans. (D) 2. Silicon is a– (A) Semiconductor (B) Insulator (C) Conductor (D)

Electro Magnetism

1. The purpose of choke in a fluorescent lamp is – (A) To decrease the voltage momentarily (B) To increase the flow of current (C) To decrease the resistance (D) To decrease

Work Energy & Power

1. Which of the following pair of a physical quantity has same dimensions? (A) Work and Energy (B) Force and Power (C) Work and Power (D) Power and Motion Ans. (A) 2.

Gravitation

1. Mass of a body on measuring in a lift at rest with a physical balance is found to be ‘m’. If the Lift is accelerated upward with acceleration ‘a’. Now, what

Force and Motion

1. A person is hurt on Kicking stone due to – (A) Inertia (B) Velocity (C) Reaction (D) Momentum Ans. (C) 2. A body with uniform motion– (A) Can’t be accelerated (B)

Sound

1. The velocity of sound in moist air is more than in dry air because the moist air has – (A) Less pressure than dry air (B) More density than dry air

Light

1. Sun appears red in colour during sunrise and sunset due to (A) The fact that sun emits only red colour at that time (B) Red light having longer wavelength scatters away

WAVES

1. When a stone is thrown in calm water of a pond waves produced are- (A) Longitudinal wave (B) Transverse wave (C) Both A and B (D) Wave does not Produced Ans.

Heat & Thermodynamics

1. Therm is the unit of (A) Power (B) Heat (C) Light (D) Distance Ans. (B) 2. Ice is packed in sawdust because (A) Sawdust does not stick to the ice (B)

Scientific Instruments physics objective questions

Scientific Instruments 1. The technique of recording and reproducing three-dimensional images of an object is called- (a) audiography (b) lexicography (c) holography (d) photography Ans: (c) 2. Proximal type of instrument is-