1
CBSE 12th Physics Delhi Set 1 - 2024
MCQ (Single Correct Answer)
+1
-0

A Young's double-slit experimental set up is kept in a medium of refractive index $\left(\frac{4}{3}\right)$. Which maximum in this case will coincide with the $6^{\text {th }}$ maximum obtained if the medium is replaced by air?

A
$4^{\text {th }}$
B
$6^{\text {th }}$
C
$8^{\text {th }}$
D
$10^{\text {th }}$
2
CBSE 12th Physics Delhi Set 1 - 2024
MCQ (Single Correct Answer)
+1
-0

The potential energy between two nucleon's inside a nucleus is minimum at a distance of about

A
0.8 fm
B
1.6 fm
C
2.0 fm
D
2.8 fm
3
CBSE 12th Physics Delhi Set 1 - 2024
MCQ (Single Correct Answer)
+1
-0

A pure Si crystal having $5 \times 10^{28}$ atoms $\mathrm{m}^{-3}$ is dopped with 1 ppm concentration of antimony. If the concentration of holes in the doped crystal is found to be $4.5 \times 10^9 \mathrm{~m}^{-3}$, the concentration (in $\mathrm{m}^{-3}$ ) of intrinsic charge carriers in Si crystal is about

A
$1.2 \times 10^{15}$
B
$1.5 \times 10^{16}$
C
$3.0 \times 10^{15}$
D
$2.0 \times 10^{16}$
4
CBSE 12th Physics Delhi Set 1 - 2024
MCQ (Single Correct Answer)
+1
-0

Assertion (A): Equal amount of positive and negative charges are distributed uniformly on two halves of a thin circular ring as shown in figure. The resultant electric field at the centre O of the ring is along OC.

Reason (R): It is so because the net potential at $O$ is not zero.

CBSE 12th Physics Delhi Set 1 - 2024 Physics - Electrostatics Question 2 English

A
If both Assertion (A) and Reason (R) are true and Reason (R) is correct explanation of Assertion (A).
B
If both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).
C
If Assertion (A) is true but Reason (R) is false.
D
If both Assertion (A) and Reason (R) are false.
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