Consider a compound slab consisting of two different materials having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is
Options
(a) √2K (b) 3K (c) 4K/3 […]
The potential energy of a simple harmonic oscillator when the particle is half way to its end point is (where E is the total energy)
Options
(a) E/8 (b) E/4 (c) E/2 (d) 2E/3
The time period of a mass suspended from a spring is T. If the spring is cut into four equal parts and the same mass is suspended from one of the parts, then the new […]
The solubility product of AgI at 25⁰C is 1.0 ˣ 10⁻¹⁶ mol² L⁻². The solubility of AgI in 10⁻⁴ N solution of KI at 25⁰C is approximately (in mol L⁻¹)
Options
(a) 1.0 […]
IN Haber process 30 L of dihydrogen and 30 L of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture under the aforesaid […]
A solid cylinder of mass M and radius R rolls without slipping down and inclined plane of length L and height h. What is the speed of its centre of mass when the cylinder reaches […]
Two 220V – 100W bulbs are connected first in series and then in parallel. Each time the combination is connected to 220 V AC supply line. The powers drawn by the combination in each case […]
Which one of the following compounds is not a protonic acid?
Options
(a) B(OH)₃ (b) PO(OH)₃ (c) SO(OH)₂ (d) SO₂(OH)₂
Correct Answer:
B(OH)₃
Explanation:
No explanation available. Be the first to write the […]
In which of the following systems will the radius of the first orbit (n=1) be minimum?
Options
(a) Single ionised helium (b) Deutron atom (c) Hydrogen atom (d) Doubly ionised lithium
Correct Answer:
Doubly […]
Two spheres of mass m and M are situated in air and the gravitational force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The […]
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