12th Physics Guide Tamil Medium

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12th Physics Guide Tamil Medium. We covered all the 12th Physics Guide Tamil Medium MCQs in this post for free so that you can practice well for the exam.

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12th Physics Guide Tamil Medium Objective for Students

A pencil is placed upright at a distance of 10 cm from a convex lens of focal length 15 cm. The nature of the image of the pencil will be:

(a) real, inverted, and magnified

(b) real, erect, and magnified

(c) virtual, erect, and reduced

(d) virtual, erect, and magnified

Option c - virtual, erect, and reduced

The impulse on a particle due to a force acting on it during a given time interval is equal to the change in its:

(a) force

(b) momentum

(c) work done

(d) energy

Option b - momentum

Which one of the following is not a form of stored energy?

(a) Nuclear energy

(b) Potential energy

(c) Electrical energy

(d) Chemical energy

Option a - Nuclear energy

Along a streamlined flow of fluid:

(a) the velocity of all fluid particles at a given instant is constant

(b) the speed of a fluid particle remains constant

(c) the velocity of all fluid particles crossing a given position is constant

(d) the velocity of a fluid particle remains constant

Option d - the velocity of a fluid particle remains constant

A man weighing 70 kg is coming down in a lift. If the cable of the lift breaks suddenly, the weight of the man would become:

(a) 70 kg

(b) 35 kg

(c) 140 kg

(d) Zero

Option d - Zero

When a solid is heated, it turns directly into a gas. This process is called:

(a) Condensation

(b) Evaporation

(c) Sublimation

(d) Diffusion

Option c - Sublimation

An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?

(a) 12

(b) 6

(c) 10

(d) 14

Option b - 6

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