The surface tension of soap solution is 0.03 N/m. The work done in blowing to form a soap bubble of surface area 40 cm², in joules is
Options
(a) 1.2×10⁻⁴ (b) 2.4×10⁻⁴ (c) 12×10⁻⁴ […]
The moment of inertia of a thin circular disc about an axis passing through its centre and perpendicular to its plane is I. Then the moment of Inertia of the disc about an axis parallel […]
A radioactive nucleus emits a beta particle. The parent and daughter nuclei are
Options
(a) Isotopes (b) Isotones (c) Isomers (d) Isobars
Correct Answer:
Isobars
Explanation:
No explanation available. Be the first to […]
When a sound wave of wavelength λ is propagating in a medium, the maximum velocity of the particle is equal to the wave velocity. The amplitude of wave is
Options
(a) λ (b) λ/2 […]
In the adiabatic compression, the decrease in volume associated with
Options
(a) increase in temperature and decrease in pressure (b) decrease in temperature and increase in pressure (c) decrease in temperaturee and decrease […]
A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio 8:1. The ratio of radii of the fragments is
Options
(a) (1:2) (b) (1:4) (c) (4:1) […]
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