CBSE Class 12 Physics VBQs Magnetic Effects of Electric Current And Magnetism

Multiple Choice Questions Question. Magnetic effect of current was discovered by(a) Oersted(b) Faraday(c) Bohr(d) AmpereAnswer: A Question. Inside the magnet, the field lines moves(a) from north to south(b) from south the north(c) away from south pole(d) away from north…

CBSE Class 12 Physics VBQs Dual Nature Of Radiation And Matter

Dual Nature Of Radiation And Matter Question 1. A function was organized in the village hall with 500 sitting arrangement. When people started entering in groups the counting became difficult. The village head asked Rahul and his friends to take the responsibility at the gate…

CBSE Class 12 Physics VBQs Electromagnetic Waves

  ONE MARK QUESTIONS Question. Identify the part of the electromagnetic spectrum to which the following wavelengths belong: (i) 10-1m (ii) 10-12 mAnswer : (i) short radio waves (ii) gamma rays Question. Identify the part of the electromagnetic spectrum to which the following…

CBSE Class 12 Physics VBQs Communication System

Communication System VALUE BASED QUESTIONS  Question 1. During a class discussion regarding the bandwidth of transmission medium, group A was of the opinion that message signals could be transmitted at any bandwidth. They were not aware of the transmission media to be used.…

CBSE Class 12 Physics VBQs Semiconductor Devices

Semiconductor Devices ONE MARKS QUESTIONS Question. What is the net charge in an n-type semi-conductor?Answer : Zero (Neutral). Question. What types of minority charge-carriers are there in a p-type semi-conductor?Answer : Electrons Question. Give the logical symbol of an OR…

CBSE Class 12 Physics VBQs Electromagnetic Induction

Electromagnetic Induction VALUE BASED QUESTIONS ONE MARK QUESTIONS Question. Predict the direction of induced current in a metal ring when the ring is moved towards a straight conductor with a constant speed v. The conductor is carrying a current I in the direction shown in…

CBSE Class 12 Physics VBQs Wave Optics

Value Based Questions  ONE MARK QUESTIONS Question. State essential condition for diffraction of light to take place.Answer : Size of slit is comparable to the size of wavelength. Question. The angle between the pass axes of a polarizer and analyser is 45°. Write the ratio of…

CBSE Class 12 Physics VBQs Effect Of Current and Magnetism

Value Based Questions Question 1. Mr Narasimhan a 65 year old person often complained of neck pain. One day his grandson Avinash, suggested that magnetic therapy is very effective in reducing such pains. He said that the permanent magnet/electromagnet , used in the device will…

CBSE Class 12 Physics VBQs Ray Optics

Ray Optics   Question 1. Ravi is using yellow light in a single silt diffraction experiment with silt width of 0.6 mm. The teacher has replaces yellow light by x-rays. Now he is not able to observe the diffraction pattern. He feels sad. Again the teacher replaces x-rays by…

CBSE Class 12 Physics VBQs Potential and Capacitance

POTENTIAL AND CAPACITANCE ONE MARK QUESTIONS Question. Define electric potential. Is it a vector or a scalar quantity?Answer : Electric potential at a point is equal to amount of work required to bring a unit positive charge from infinity to that point in the electric field.…

CBSE Class 12 Physics VBQs Current Electricity

   VBQ‐Current Electricity Question. That night Vaikunth was preparing for his physics exam. Suddenly the light in his room went off and he could not continue his studies. His cousin brother Vasu who had come to visit him was quick to react. Vasu using the torch (…

CBSE Class 12 Physics VBQs Communication System Set A

VALUE BASED QUESTIONS Question 1. Raj was cycling from his village to a neighboring village. On the way ,he met an old man who was walking in the direction of the same neighboring village. Raj invited the old man to sit on his cycle and took him to the neighboring village. The…

CBSE Class 12 Physics VBQs Atoms and Nuclei

Atoms and Nuclei   One Marks Question Question. What is the ratio of the nuclear densities of two nuclei having mass number in the ratio of 1:4?Answer : Nuclear density is independent of mass number so ratio will be 1:1 Question. Which has greater ionizing power:- alpha or…

CBSE Class 12 Physics Value Based Questions Set A

                                          VALUE BASED QUESTIONS (PHYSICS) Q1 Sumit has a cable TV connection from a local cable operator. He buys a new TV and plans to call the operator for a new connection. However, his friend Amit , who is an engineer, tells him” there is no…