Physics with Gaurav
Hello My Dear Students.
I m Gaurav Sharma, B.Tech (Mechanical Engineering) and M.Tech (Thermal Engineering) holding an experience of 10years in Teaching. My Motive is to make you familiar with basic Concepts of Physics, so that you can prepare yourself for competitive exams like Neet, JEE as well as board Exams.
Regards
Er. Gaurav Sharma
Example 12.4 Physics 12. According to the classical electromagnetic theory, calculate the initial
Example 12.3 Physics 12. It is found experimentally that 13.6 eV energy is required to separate a
Example 12.2 Physics 12. In a Geiger-Marsden experiment, what is the distanceof closest approach
Exercise 9.19 Physics 12. A screen is placed 90cm from an object. The image of the object on the
Example 12.1 Physics 12. In the Rutherford’s nuclear model of the atom, the nucleus radius about 10
CHAPTER 11 || CLASS 12 PHYSICS || ONE SHORT NUMERICALS || DUAL NATURE OF RADIATION AND MATTER
Exercise 11.11 Physics 12. Show that the wavelength of electromagnetic radiation is equal to the de
Exercise 11.10 Physics 12. What is the de Broglie wavelength of(a) a bullet of mass 0.040 kg
Exercise 11.8 Physics 12. Light of frequency 7.21 × 10^ 14 Hz is incident on a metal surface.
Exercise 11.7 Physics 12. The work function for a certain metal is 4.2 eV. Will this metal give
Exercise 11.6 Physics 12. The threshold frequency for a certain metal is 3.3 × 1014 Hz. If light
Exercise 11.5 Physics 12. In an experiment on photoelectric effect, the slope of the cut-off voltage
Exercise 11.4 PHYSICS 12. Monochromatic light of wavelength 632.8 nm is produced by a helium-neon
Exercise 11.3 Physics 12. The photoelectric cut-off voltage in a certain experiment is 1.5 V. What
Exercise 11.2 Physics 12. The work function of caesium metal is 2.14 eV. When light of frequency
Exercise 11.1 physics 12. Find the (a) maximum frequency, and (b) minimum wavelength of X-rays
Example 11.3 Physics 12. What is the de Broglie wavelength associated with (a) an electron moving
Example 11.2 Physics 12. The work function of caesium is 2.14 eV. Find (a) the threshold frequency
Example 11.1 Physics 12. Monochromatic light of frequency 6.0 x 10^ 14 Hz is produced by a laser.
CH 10 CLASS 12 PHYSICS || COMPLETE NUMERICALS || WAVE OPTICS
EXERCISE 10.6 Physics 12. A beam of light consisting of two wavelengths, 650 nm and 520 nm,is
Exercise 10.5 Physics 12. In Young’s double-slit experiment using monochromatic light of wavelength
Exercise 10.4 Physics 12. In a Young’s double-slit experiment, the slits are separated by 0.28 mm
Exercise 10.3 Physics 12. The refractive index of glass is 1.5. What is the speed of light in glass?
Exercise 10.2 Physics 12. What is the shape of the wavefront in each of the following cases
Exercise 10.1 Physics 12. Monochromatic light of wavelength 589 nm is incident from air on a water
Example 10.2 Physics 12. Discuss the intensity of transmitted light when apolaroid sheet is rotated
Example 10.1 Physics 12. When monochromatic light is incident on a surface separating two media
CH 9 || CLASS 12 || RAY OPTICS AND OPTICAL INSTRUMENTS || ALL NUMERICALS || ONESHORT
Exercise 9.31 Physics 12. Figure 9.30 shows an equiconvex lens (of refractive index 1.50) in contact