Question Answers

The initial shape of the wave front of the beam is The initial shape of the wave front of the beam is November 18, 2020 Category: Chapter 16 - Optics , JEE Mains Physics 2002-2019 Solved Video Solutions ,

Which of the following is a mixed anhydride (a) NO (b) NO2 (c) N2O5 (d) N2O Which of the following is a mixed anhydride (a) NO (b) NO2 (c) N2O5 (d) N2O November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

A mixture of ammonia and air at about 800 C in the presence of Pt gauze forms (a) N2O (b) NO (c) NH2OH (d) N2O3 A mixture of ammonia and air at about 800 C in the presence of Pt gauze forms (a) N2O (b) NO (c) NH2OH (d) N2O3 November 18, 2020 Category: Uncategorised [...]

In a Young’s double slit experiment, the two slits act as coherent sources of waves of equal amplitude A and wavelength λ. In another experiment with the same arrangement the two slits are made to act as incoherent sources of waves of same amplitude and wavelength. If the intensity at the middle point of the [...]

The prefix zepto stands for ( in m ) (a) 10^9 (b) 10^-12 (c) 10^-15 (d) 10^-21 The prefix zepto stands for ( in m ) (a) 10^9 (b) 10^-12 (c) 10^-15 (d) 10^-21 November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following halogen can be purified by sublimation Which of the following halogen can be purified by sublimation November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

In an organic compound, phosphorus is estimated as (a) Mg2P2O7 (b) Mg3(PO4)2 (c) H3PO4 (d) P2O5 In an organic compound phosphorus is estimated as (a) Mg2P2O7 (b) Mg3(PO4)2 (c) H3PO4 (d) P2O5 November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Ammonia, on reaction with excess of chlorine, gives (a) NCl3 and HCl (b) N4 and NH4Cl (c) NCl3 and NH4Cl (d) N2 and HCl Ammonia gives (a) NCl3 and HCl (b) N4 and NH4Cl (c) NCl3 and NH4Cl (d) N2 and HCl on reaction with excess of chlorine November 18, 2020 Category: Uncategorised (JEE Advanced [...]

Heater of an electric kettle is made of a wire of length L and diameter d. It takes 4 minutes to raise the temperature of 0.5 kg water by 40K. This heater is replaced by a new heater having two wires of the same material, each of length L and diameter 2d. The way these [...]

When two identical batteries of internal resistance 1Ω each are connected in series across a resistor R, the rate of heat produced in R is J1. When the same batteries are connected in parallel across R, the rate is J2 If j1 = 2.25 j2 , then the value of R in ohm is the [...]