CBSE 12th Physics Delhi Set 1 - 2023 | Class 12 Year Wise Previous Years Questions

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

Two long parallel wires kept $$2 \mathrm{~m}$$ apart carry $$3 \mathrm{~A}$$ current each, in the same direction. The force per unit length on one wire due to the other is

$$4.5 \times 10^{-7} \mathrm{~Nm}^{-1}$$, attractive

$$4.5 \times 10^{-7} \mathrm{~N} / \mathrm{m}$$, repulsive

$$9 \times 10^{-7} \mathrm{~N} / \mathrm{m}$$, repulsive

$$9 \times 10^{-7} \mathrm{~N} / \mathrm{m}$$, attractive

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

Which of the following has its permeability less than that of free space?

Copper

Aluminium

Copper chloride

Nickel

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

A square shaped coil of side $$10 \mathrm{~cm}$$, having 100 turns is placed perpendicular to a magnetic field which is increasing at $$1 \mathrm{~T} / \mathrm{s}$$. The induced emf in the coil is

0.1 V

0.5 V

0.75 V

1.0 V

CBSE 12th Physics Delhi Set 1 - 2023

MCQ (Single Correct Answer)

-0

Which one of the following electromagnetic radiation has the least wavelength?

Gamma rays

Microwaves

Visible light

X-rays

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