Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)

Light of wavelength lemda ph falls on a cathode plate inside a vacuum tube as shown in the figure. The work function of the cathode surface is phi and the anotde is a wire mesh of conducting material Light of wavelength lemda ph falls on a cathode plate inside a vacuum tube as shown in [...]

In a historical experiment to determine Planck’s constant, a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying a metal surface was irradiated with light of different wavelengths. The emitted photoelectron energies were measured by applying In a historical experiment to determine Planck's constant October 15, 2020 [...]

A metal surface is illuminated by light of two different wavelengths 248 nm and 310 nm. The maximum speeds of the photoelectrons corresponding to these wavelengths are u1 and u2, A metal surface is illuminated by light of two different wavelengths 248 nm and 310 nm. The maximum speeds of the photoelectrons corresponding to these [...]

A pulse of light of duration 100 nm is absorbed completely by a small object initially at rest. Power of the pulse is 30 mW and the speed of light is 3 * 10^8 m/s. The final momentum of The anode voltage of a photocell is kept fixed. The wavelength lemda of the light falling [...]

A particle A of mass m and initial velocity v collides with a particle B of mass m/2 which is at rest. The collision is head on, and elastic. The ratio of the de-Broglie wavelength lemda A to lemda B after A particle A of mass m and initial velocity v collides with a particle [...]

Radiation of wavelength lemda, is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is changed to 3 lemda / 4, the speed of the fastest emitted electron will be is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is changed to 3 lemda [...]

Match List 1 ( Fundamental Experiment ) with List 2 (its conclusion) and select the correct option from the choices given below the list: Match List 1 ( Fundamental Experiment ) with List 2 (its conclusion) and select the correct option from the choices given below the list: October 15, 2020 Category: Uncategorised (JEE Advanced [...]

The anode voltage of a photocell is kept fixed. The wavelength lemda of the light falling on the cathode is gradually changed. The plate current I of the photocell varies as follows: The anode voltage of a photocell is kept fixed. The wavelength lemda of the light falling on the cathode is gradually changed. The [...]

Statement 1: Davisson-Germer experiment established the wave nature of electrons. Statement 2: If electrons have wave nature , they can interfere and show diffraction. Statement 1: Davisson-Germer experiment established the wave nature of electrons. Statement 2: If electrons have wave nature they can interfere and show diffraction. October 14, 2020 Category: Uncategorised (JEE Advanced Physics [...]

This questions has Statement 1 and Statement 2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement 1 : A metallic surface is irradiated by a monochromatic light of frequency choose the one that best describes the two statements. Statement 1 : A metallic surface is [...]