1
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
For plane electromagnetic waves propagating in the positive $z$-direction. The combination which gives the correct possible direction for $\mathbf{E}$ and $\mathbf{B}$ fields respectively is
A
$(-2 \hat{\mathbf{i}}-3 \hat{\mathbf{j}})$ and $(3 \hat{\mathbf{i}}-2 \hat{\mathbf{j}})$
B
$(3 \hat{i}+4 \hat{j})$ and $(4 \hat{i}-3 \hat{j})$
C
$(\hat{\mathbf{i}}-2 \hat{\mathbf{j}})$ and $(-2 \hat{\mathbf{i}}-\hat{\mathbf{j}})$
D
$(-2 \hat{\mathbf{i}}+3 \hat{\mathbf{j}})$ and $(\hat{\mathbf{i}}+2 \hat{\mathbf{j}})$
2
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A photon incident on a metal of work function 2 eV produced photoelectron of maximum kinetic energy of 2 eV . The wavelength associated with the photon is
A
$6200 \mathop {\rm{A}}\limits^{\rm{o}}$
B
$3100 \mathop {\rm{A}}\limits^{\rm{o}}$
C
$9300 \mathop {\rm{A}}\limits^{\rm{o}}$
D
$2000 \mathop {\rm{A}}\limits^{\rm{o}}$
3
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Energy levels $A, B$ and $C$ of a certain atom corresponding to increasing values of energy i.e $E_A < E_B < E_C$. If $\lambda_1, \lambda_2$ and $\lambda_3$ are the wavelengths of a photon corresponding to the transitions shown then.

AP EAPCET 2024 - 23th May Morning Shift Physics - Atoms and Nuclei Question 1 English
A
$\lambda_3=\lambda_1+\lambda_2$
B
$\lambda_3=\frac{\left(\lambda_1+\lambda_2\right)}{\lambda_1 \lambda_2}$
C
$\lambda_3^2=\lambda_1^2+\lambda_2^2$
D
$\lambda_3=\frac{\lambda_1 \lambda_2}{\left(\lambda_1+\lambda_2\right)}$
4
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In a nuclear reactor, the fuel is consumed at the rate of $1 \times 10^{-3} \mathrm{gs}^{-1}$. The power generated in kW is
A
$9 \times 10^{14}$
B
$9 \times 10^7$
C
$9 \times 10^8$
D
$9 \times 10^{12}$
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