12th Physics Public Question Paper. We covered all the 12th Physics Public Question Paper MCQs in this post for free so that you can practice well for the exam.
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12th Physics Public Objective Question Paper for Students
If the length of the filament of a heater is reduced by 10%, the power of the heater will:
(a) increase by about 9%
(b) increase by about 11%
(c) increase by about 19%
(d) decrease by about 10%
Option b – increase by about 11%
A boat floating in a tank is carrying some passengers. If the passengers drink water from the tank, how will it affect the water level of the tank?
(a) It will go down.
(b) It will rise.
(c) It will depend on the atmospheric pressure.
(d) It will remain the same.
Option d – It will remain the same
A heavy body and a light body have equal kinetic energy. Then:
(a) the heavy body has greater momentum.
(b) the light body has greater momentum.
(c) both have equal momentum.
(d) both have the same angular momentum.
Option a – the heavy body has greater momentum
Dilatometer is used for the measurement of:
(a) electrical energy
(b) mechanical energy
(c) dimensional change in material
(d) thermal energy
Option c – dimensional change in material
Mirage is an illustration of:
(a) Only dispersion of light
(b) Only reflection of light
(c) Only the total internal reflection of light
(d) Both refraction and total internal reflection of light
Option d – Both refraction and total internal reflection of light
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