Shivam Varshney

NCERT Exemplar Problems Class 12 Physics Chapter 15 Communication Systems Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Three waves A, B and C of frequencies 1600 kHz, 5 MHz and 60 MHz respectively...

NCERT Exemplar Problems Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. The conductivity of a semiconductor increases with increase in temperature, because ...

NCERT Exemplar Problems Class 12 Physics Chapter 13 Nuclei Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Suppose we consider a large number of containers each containing initially 10000 atoms of a radioactive material...

NCERT Exemplar Problems Class 12 Physics Chapter 12 Atoms Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Taking the Bohr radius as a0= 53 pm, the radius of Li++ ion in its...

NCERT Exemplar Problems Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. A particle is dropped from a height H. The de-Broglie wavelength of...

NCERT Exemplar Problems Class 12 Physics Chapter 10 Wave Optics Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Consider a light beam incident from air to a glass slab at Brewster’s angle as shown...

NCERT Exemplar Problems Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. A ray of light incident at an angle d on a refracting face...

NCERT Exemplar Problems Class 12 Physics Chapter 8 Electromagnetic Waves Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. One requires 11 eV of energy to dissociate a carbon monoxide molecule into carbon and oxygen...

NCERT Exemplar Problems Class 12 Physics Chapter 7 Alternating Current Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. If the rms current in a 50 Hz AC circuit is 5 A, the value of...

NCERT Exemplar Problems Class 12 Physics Chapter 6 Electromagnetic Induction Multiple Choice Questions (MCQs) Single Correct Answer Type Question 1. Solution: (c) Key concept: Magnetic flux is defined as the total number of magnetic lines of force passing...