1
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

An electromagnetic wave with poynting vector $6 \mathrm{Wm}^{-2}$ is absorbed by a surface area $12 \mathrm{~m}^2$. The force on the surface is

A
$24 \times 10^{-8} \mathrm{~N}$
B
$30 \times 10^{-5} \mathrm{M}$
C
$2.4 \times 10^{-12} \mathrm{~N}$
D
$3.6 \times 10^8 \mathrm{M}$
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

Two point charges of $+3 \mu \mathrm{C}$ and $-3 \mu \mathrm{C}$ are placed at a certain distance apart from each other. Electric potential at a distance 60 cm from the mid-point of dipole on axial line is 150 V , then the value of dipole length is

A
$2 \times 10^{-3} \mathrm{~m}$
B
$2 \times 10^{-4} \mathrm{~m}$
C
$10^{-3} \mathrm{~m}$
D
$10^{-4} \mathrm{~m}$
3
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

The primary of a transformer has 400 turns while the secondary has 2000 turns. If the power output from the secondary at 1000 V is 12 kW . The resistance of the primary is $0.2 \Omega$ and that of the secondary is $2 \Omega$. If the efficiency of the transformer is $80 \%$, then the power loss in the primary is

A
288 W
B
1125 W
C
2000 W
D
725 W
4
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

The maximum power rating of a $20 \Omega$ resistor is 2 kW . Then, it cannot be used with 300 V DC source because the

A
current drawn is very large and it can blow the fuse.
B
current drawn is very less and appliance does not work.
C
resistor may melt due to excessive heat.
D
None of the above
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12