CBSE Class 12 Physics VBQs Communication System
Communication System 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. Group B gave information…
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
Question. In Young’s double-slit experiment, if there is no initial phase difference between the light from two slits,a point on the screen corresponding to the fifth minimum has path difference (a) 5 λ/2 (b) 10λ/2 (c) 9λ/2 (d) 11λ/2 Answer. C Question. A linear…
CBSE Class 12 Physics VBQs Effect Of Current and Magnetism
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 help to produce…