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

The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated 100W and 220V is connected across 220V power supply. If the voltage drops by 10%, then the power of the lamp will be The resistance of the filament of a lamp increases with the increase in temperature. A [...]

Two electric bulbs A and B are rated 60 and 100 W, respectively . If they are connected in parallel to the same source , then respectively . If they are connected in parallel to the same source then Two electric bulbs A and B are rated 60 and 100 W November 17, 2020 Category: [...]

An electric immersion heater of 1.08 kW is immersed in water. After it has reached a temperature of 10o0 degree C, how much time will be required to produce 100 g of steam ? An electric immersion heater of 1.08 kW is immersed in water. After it has reached a temperature of 10o0 degree C [...]

Point out the incorrect statement regarding Be (Group – IIA) (a) It forms an ionic carbide (b) Its carbonate decomposes on heating Point out the incorrect statement regarding Be (Group - IIA) (a) It forms an ionic carbide (b) Its carbonate decomposes on heating November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

Which one of the following is the strongest base (a) Be(OH)2 (b) Mg(OH)2 (c) Al(OH)3 (d) Si(OH)4 Which one of the following is the strongest base (a) Be(OH)2 (b) Mg(OH)2 (c) Al(OH)3 (d) Si(OH)4 November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Mg burns in CO to produce (a) MgO2 (b) MgCO3 (c) MgO + CO (d) MgO + C Mg burns in CO to produce (a) MgO2 (b) MgCO3 (c) MgO + CO (d) MgO + C November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The resistance in which the maximum heat is produced is given by ( figure ) The resistance in which the maximum heat is produced is given by ( figure ) November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

An ideal gas is filled in a closed rigid and thermally insulated container. A coil of 1000 ohm resistor carrying current 1 A for 5 min supplies heat to the gas . The change in internal energy of the gas is The operating temperature of the filament of lamp is 2000∘C. The temperature coefficient of [...]

The circuit shown in figure contains a battery , a rheostat, and two identical lamps. what will happen to the brightness of the lamps if the resistance of the rheostat is increased ? a rheostat and two identical lamps. what will happen to the brightness of the lamps if the resistance of the rheostat is [...]

Three similar light bulbs are connected to a constant voltage dc supply as shown in figure. Each bulb operates at normal brightnesand the ammeter (of negligible resistance ) registers a steady current . The filament of one of the bulbs breaks. what happens to the ammeter reading and to the brightness of the remaining bulbs [...]