If force is proportional to square of velocity, then the dimension of proportionality constant is
Options
(a) MLT⁰ (b) MLT⁻¹ (c) ML⁻²T (d) ML⁻¹T⁰
Correct Answer:
ML⁻¹T⁰
Explanation:
No explanation available. Be the […]
Two liquid drops having diameters of 1 cm and 1.5 cm. The ratio of excess pressure inside them is
Options
(a) 1 : 1 (b) 5 : 3 (c) 2 : 3 (d) […]
A charge of 40 µC is given to a capacitor having capacitance C=10 µF. The stored energy in erg is
Options
(a) 80 x 10⁻⁶ (b) 800 (c) 80 (d) 8000
Correct Answer: […]
The valence band and the conductance band of a solid overlap at low temperature. The solid may be
Options
(a) A metal (b) A semiconductor (c) An insulator (d) None of these
Correct […]
If the wavelength of light in vacuum be, the wavelength in a medium of refractive index µ will be
Options
(a) µλ (b) λ / µ (c) λ / µ² (d) µ²λ
Correct […]
When a radioactive substance emits an ∝ particle, its position in the periodic table is lowered by
Options
(a) one place (b) two places (c) three places (d) four places
Correct Answer:
two […]
A particle is moving with a uniform velocity along a straight line path. A force is not required to
Options
(a) increase its speed (b) decrease the momemtum (c) change the direction (d) […]
The rest mass of a body is m1. It moves with a velocity of 0.6c, then its relativistic mass if m then
Options
(a) m = m1 (b) m < m1 (c) m […]
A black body is heated from 27° C to 127° C. The ratio of their energies of radiations emitted will be
Options
(a) 3 : 4 (b) 9 : 16 (c) 27 : […]
The distance of a geo-stationary satellite from the centre of the earth is nearest to(where R=6400 km)
Options
(a) 5 R (b) 7 R (c) 10 R (d) 18 R
Correct Answer:
7 […]
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