A ray of light passes from a medium A having refractive index 1.6 to the medium B having refractive index 1.5. The value of critical angle of medium A is……..
Options
(a) sin⁻¹ √16/15 […]
Angle of minimum deviation for a prism of reractive index 1.5 equal to the angle of prism of given prism. Then, the angle of prism is ……. (sin 48⁰36′ =0.75)
Options
(a) 80⁰ […]
The energy released by the fission of one uranium atom is 200 MeV. The number of fission per second required to produce 6.4 W power is
Options
(a) 2×10¹¹ (b) 10¹¹ (c) 10¹⁰ (d) […]
By the succesive disintegration of ₉₂U²³⁸, the final product obtained is ₈₂Pb²⁰⁶, then how many number of α and β-particles are emitted?
Options
(a) 6 and 8 (b) 8 and 6 (c) 12 and […]
Equal currents are passing through two very long and straight parallel wires in the same direction. They will
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(a) attract each other (b) repel each other (c) lean towards each other (d) […]
A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal component of earth’s magnetic field is Bʜ=3×10⁻⁵ T. What will be the current which gives a deflection of […]
The effective length of magnet is 31.4 cm and its pole strength is 0.8Am. The magnetic moment, if it is bent in the form of a semicircle is …….. A-m²
Options
(a) 1.2 (b) […]
Light of wavelength λ is incident on slit of width d. The resulting diffraction pattern is observed on a screen placed at distance D. The linear width of central maximum is equal to width of […]
An inclined plane of length 5.60m making an angle of 45⁰ with the horizontal is placed in a uniform electric field E=100Vm⁻¹. A particle of mass 1kg and charge 10⁻²C is allowed to slide down […]
When 10¹⁹elecrons are removed from a neutral metal plate through some process, then the charge on it becomes
Options
(a) (+1.6C) (b) (-1.6C) (c) 10¹⁹C (d) 10⁻¹⁹C
Correct Answer:
(+1.6C)
Explanation:
No explanation […]
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