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Unpolarized light of intensity I passes through an ideal polarizer A. Another identical polarizer B is placed behind A. The intensity of light beyond B is found to be I/2. Now another identical polarizer C is placed between A and B. The intensity beyond B is now found to be I/8. The angle between polarizer [...]

In a double-slit experiment, green light (5303A˚) falls on a double slit having a separation of 19.44μm and a width of 4.05 μ-m. The number of bright fringes between the first and the second diffraction minima is :- green light (5303A˚) falls on a double slit having a separation of 19.44μm and a width of [...]

The supply voltage to room is 120 V. The resistance of the lead wires is 6Ω. A 60 W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb? The supply voltage to room is 120 V. The [...]

Consider a Young’s double slit experiment as shown in figure. What should be the slit separation d in terms of wavelength λ such that the first minima occurs directly in front of the slit (S1) ? Consider a Young's double slit experiment as shown in figure. What should be the slit separation d in terms [...]

When concentrated nitric acid is heated, it decomposes to give (a) O2 and N2 (b) NO (c) N2O5 (d) NO2 and O2 it decomposes to give (a) O2 and N2 (b) NO (c) N2O5 (d) NO2 and O2 When concentrated nitric acid is heated November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

Atomic number of N is 7. The atomic number of IIIrd member of nitrogen family is (a) 23 (b) 15 (c) 33 (d) 43 Atomic number of N is 7. The atomic number of IIIrd member of nitrogen family is (a) 23 (b) 15 (c) 33 (d) 43 November 18, 2020 Category: Uncategorised (JEE Advanced [...]

In a double slit experiment, when a thin film of thickness t having refractive index μ is introduced in front of one of the slits, the maximum at the centre of the fringe pattern shifts by one fringe width. The value of t is (λ is the wavelength of the light used) : In a [...]

Two coherent sources produce waves of different intensities which interfere. After interference, the ratio of the maximum intensity to the minimum intensity is 16. The intensity of the waves are in the ratio: the ratio of the maximum intensity to the minimum intensity is 16. The intensity of the waves are in the ratio: Two [...]

Which gas is obtained when urea is heated with HNO2 (a) N2 (b) H2 (c) O2 (d) NH3 Which gas is obtained when urea is heated with HNO2 (a) N2 (b) H2 (c) O2 (d) NH3 November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

H3PO3 is (a) A tribasic acid (b) A dibasic acid (c) Neutral (d) A monobasic acid H3PO3 is (a) A tribasic acid (b) A dibasic acid (c) Neutral (d) A monobasic acid November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,