MCQs on Optical Microscope Q1: What is the ratio of resolving power of an optical microscope for wavelengths λ1= 4000 Å and λ2= 6000 Å? 2:3 3:2 6:25 16:9 Answer: (b) 3:2 Q2: Two identical glass (μg=3/2) equi – convex …
MCQs on Fibre Optics Q: Data signal with minimum error is generated by which among the following Signal processing circuits Photodiode Linear circuitry None of the above Answer: (c) Linear circuitry Q: Which among the following is described by the …
MCQs on Elastic and Inelastic Collision Q1: The principle of conservation of linear momentum can be strictly applied during a collision between two particles provided the time of impact is Moderately small Extremely large Extremely small Depends on a particular …
MCQs on Work Done by Constant Force Q1: If the unit of force and length each be increased by four times, then the unit of energy is increased by 16 times 8 times 2 times 4 times Answer: (a) 16 …
MCQs on Conservation of Energy and Momentum Q1: Work done in raising a box depends on How fast it is raised The strength of the man The height by which it is raised None of the above Answer: (c) The …
MCQs on Non-uniform Circular Motion Q1: A bottle of soap water is grasped by the neck and swings briskly in a vertical circle. Near which portion of the bottle do the bubbles collect Near the bottom In the middle of …
MCQs on Radioactivity Q1: The neutral atoms of all isotopes of the same element contain the same number of __________. neutrons only. Electrons Mass numbers Masses Answer: (b) Electrons Q2: The atomic number is not changed by which type of …
MCQs on Zener Diode Q: In a Zener diode with a high breakdown voltage has Lightly doped P and N P or N is lightly doped Heavily doped P and N None of these Answer: (a) Lightly doped P and N …
MCQs on Oscillation Q1: The time period of a simple pendulum is T remaining at rest inside a lift. Find the time period of the pendulum when the lift starts to move up with an acceleration of g/3 T T/2 …
MCQs on Digital Electronics Q: Boolean Algebra is essentially based on Truth Logic Symbol Numbers Answer: (b) Logic Q: The logic behind NOR gate is that it gives HIgh output when both the inputs are low Low output when both …
MCQs on Transistor Q1: The base of a transistor is …………. doped Moderately Lightly Heavily None of the above Answer: (b) Lightly Q2: How many depletion layers are there in a transistor Four One Two Three Answer: (c) Two Q3: A transistor …
MCQs on Tunnel Diode Q1: The tunnel diode is mainly used For very high speed of switching To control the power For rectification For fact chopping Answer: (a) For very high speed of switching Q2: The Tunnel diode is best …
MCQs on RLC Circuit Q1: A 6.8 kΩ resistor, a 7 mH coil, and a 0.02 μF capacitor are in parallel across a 17 kHz ac source. The coil’s internal resistance Rw is 30 Ω. The equivalent parallel resistance, Rp …
MCQs on Valve Electronics (Diode and Triode) Q1: Number of secondary electrons emitted per number of primary electrons depends on Material of target Frequency of primary electrons Intensity None of the above Answer: (c) Intensity Q2: In a diode, when …
MCQs on Electromotive Force (EMF) Q1. The flux used in the equation for the calculation of induced emf in a transformer is in its RMS value Average value Maximum value Twice that of the maximum value Answer: (c) Maximum value …
MCQs on Impedance Q1: What is the value of input impedance of a quarter-wave line 50 ohm and the load impedance of 20 ohms? 50 20 1000 125 Answer: (d) 125 Q2: The value of input impedance for a matched …
MCQs on Oscillator Q1: Which among the following parameters acts as an initiator for the operation of an oscillator in the absence of input signal? Noise figure Noise voltage Noise power Noise temperature Answer: (b) Noise voltage Q2: Multivibrators belongs …
MCQs on Nuclear fission and Nuclear fusion Q1: The splitting of a nucleus into smaller nuclei is Fusion Fission Half-life gamma -radiation Answer: (b) Fission Q2: Name the moderator used in the nuclear reactor? Plutonium Thorium Graphite Berilium Answer: (c) …
MCQs on Viscosity Q1: Which of the following represents viscosity? Potential energy stored in fluid Resistance to fluid motion Roughness of the surface The pressure difference between the two fluids Answer: (b) Resistance to fluid motion Q2: What is the …
MCQs on Gravitation What happens to the gravitational potential at the centre of the uniform spherical shell which shrinks gradually? (a) Remains constant (b) Decreases (c) Increases (d) Oscillates Answer: (b) Decreases Choose the factor on which the orbital velocity …
MCQs on Physical World and Measurement How many numbers of base SI units are there? (a) 5 (b) 10 (c) 7 (d) 9 Answer: (c) 7 What is the percentage error in the measurement of the kinetic energy of a …