A rod of weight W is supported by two parallel knife edges A and B is in equilibrium in a horizontal position. The knives are at a distance d from each other. The centre of […]
A mass m moves in a circle on a smooth horizontal plane with velocity v₀ at a radius R₀. The mass is attached to string which passes through a smooth hole in the plane as […]
Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq. They are stretched, first by the same amount (case a,) then by the same force (case b). The work done […]
Three blocks A,B and C of masses 4 kg, 2 kg and 1 kg respectively are in contact on a frictionless surface as shown in fig. If a force of 14 N is applied on […]
A block of mass m1 rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block B of […]
A ship A is moving westwards with a speed of 10 km/h and a ship B 100 km South of A is moving Northwards with a speed of 10 km/h. The time after which the […]
A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to v(x) = bx⁻²ⁿ, where b and n are constants and x is the position of the particle. The acceleration of […]
If energy(E), velocity(V) and time(T) are chosen as fundamental quantities, the dimensional formula of surface tension will be
Options
(a) EV⁻¹T⁻² (b) EV⁻²T⁻² (c) E⁻²V⁻¹T⁻³ (d) EV⁻²T⁻¹
Correct Answer:
EV⁻²T⁻²
Explanation:
Let surface […]
Which of the following figures represent the variation of particle momentum and the associated de-Broglie wavelength?
Options
(a)
(b)
(c)
(d)
Correct Answer:
(a)
Explanation:
The de-Broglie wavelength is given […]
Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil […]
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