The pressure at the bottom of a tank containing a liquid does not depend on
Options
(a) Acceleration due to gravity (b) Height of liquid column (c) Area of bottom surface (d) Nature of […]
A body, which emits radiations of all possible wavelengths, is known as
Options
(a) Good conductor (b) Partial radiator (c) Absorber of photons (d) Perfect black body
Correct Answer:
Perfect black body
Explanation:
No […]
Cohesive force is experienced between
Options
(a) Magnetic substances (b) Dissimilar molecules (c) Molecules of same substance (d) None of these
Correct Answer:
Molecules of same substance
Explanation:
No explanation available. Be the first […]
If capillary experiment is performed in vaccum, then a liquid under the condition
Options
(a) will raise (b) will remain as such (c) will fall (d) None of these
Correct Answer:
will raise
Explanation: […]
A slab consists of two parallel layers of two different materials of same thickness and area having thermal conductivities K₁ and K₂. The equivalent conductivity of the combination of
Options
(a) K₁ + K₂ […]
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
Options
(a) length = 100 cm, diameter = 1 mm […]
A particle of mass m oscillates along x-axis according to equation x = a sin ωt. The nature of the graph between momentum and displacement of a particle is
Options
(a) straight line passing […]
The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are:
Options
(a) kgms⁻¹ (b) kgms⁻² (c) kgs⁻¹ (d) kgs
Correct Answer:
kgs⁻¹
Explanation: […]
The period of oscillation of a mass M suspended from a spring of negligible mass is T. If along with it another mass M is also suspended, the period of oscillation will now be
The displacement of a particle along the x-axis is given by x = a sin² ?t. The motion of the particle corresponds is:
Options
(a) simple harmonic motion of frquency ? / π […]
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