Question is ⇒ An electromagnetic wave is incident normally on a dielectric boundary. It is, Options are ⇒ (A) totally reflected, (B) partially reflected and partially refracted, (C) totally absorbed, (D) none of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ An electromagnetic wave is incident normally on a dielectric boundary. It is, Options are ⇒ (A) totally reflected, (B) partially reflected and partially refracted, (C) totally absorbed, (D) none of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	An electromagnetic wave is incident normally on a dielectric boundary. It is
A.	totally reflected [Wrong Answer]
B.	partially reflected and partially refracted [Correct Answer]
C.	totally absorbed [Wrong Answer]
D.	none of the above [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ In which function is each term known as maxterm?
SOP
POS
Hybrid
SOP and Hybrid

⇒ NAND gates can be used to produce edge triggering.
TRUE
FALSE

⇒ A voltage v = 100 sin ωt + 10 sin 5 ωt is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is
0.0314 cos 314 t + 0.0157 cos 1570 t
0.0314 sin 314 t + 0.0157 sin 1570 t
0.0314 cos 314 t + 0.0314 cos 1570 t
0.0157 cos 314 t + 0.0157 cos 1570 t

⇒ Study the circuit of figure and examine the following statem
1, 2 and 3
1 and 2
1 and 3
2 and 3

⇒ The discone antenna is
a useful direction finding antenna
used as a radar receiving antenna
useful as a UHF receiving antenna
circular polarized like other circularly antenna

⇒ If modulus is less than 2^N, some states of the counter are skipped by using NAND gates.
TRUE
FALSE

⇒ As the temperature of an intrinsic semiconductor material is increased
additional holes are created in the conduction band
protons get excited
protons acquire charge
energy of the atom is increased

⇒ In a photo transistor the photocurrent is
emitter base junction
collector base junction
collector
either (a) or (b)

⇒ A Darlington pair is used for
low distortion
high frequency range
high power gain
high current gain

⇒ In figure the rms valu
5
2.5
2.5
50

⇒

Assertion (A): Fourier series can also be written in exponential form.

Reason (R): sin (n ωt) and cos (n ωt) can be expressed as sum or difference of exponentials.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true

⇒ In a series R-L circuit when excited by a 1 volt battery the current is 1 - e^-t. If it is excited by a source 2 sin t, the current will be
2 sin (t - 45°) + e^-t
2 sin (t + 45°) + e^-t
sin (t - 45°) + e^-t
sin (t + 45°) + e^-t

⇒ A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The power gain is
125
250
1125
3125

⇒

Assertion (A): SUS is a PUT and avalanche diode connected between gate and cathode

Reason (R): SBS has two SUS inbuilt together and connected in anti-parallel

Both A and R are correct and R is correct explanation of A
Both A and R correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct

⇒ A periodic voltage has following values for equal time intervals changing suddenly from one value to next : 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, - 5, - 10
42.2 V
19.098 V
38.2 V
none of these

⇒ The standard FORTRAN exponential form of decimal number - 0.000000023 is
2.3 E - 8
-2.3 E - 8
2.3 E - 7
-2.3 E - 7

⇒ The antenna most commonly used for TV broadcasting in the UHF band is
turnstile antenna
dipole antenna
yagi antenna
rhombic antenna

⇒ A plot of modulation index vs carrier amplitude yields a
horizontal line
vertical line
parabola
hyperbola

⇒ The Fourier transform of f(t) = cos ω₀t is
p[δω₀ + δ(- ω₀)]
p[δ(ω - ω₀) + δ(ω + ω₀)]
p[δω₀ - δ(- ω₀)]
p[δ(ω - ω₀) - δ(ω + ω₀)]

⇒ Volt is equivalent to
joule/coulomb
joule/watt
joule/ampere
joule/volt

⇒ Fields are said to be circularly polarized if
their magnitudes are equal
their magnitudes are equal and they differ in phase by ± 90°
their magnitudes are unequal and they differ in phase ± 90°
their magnitudes are unequal and they are in phase

⇒ Peak to peak value of a sine wave is equal to twice the peak value
TRUE
FALSE

⇒ The chemical effect of current is used in
dc ampere hour meter
dc ammeter
ac energy meter
all of the above

⇒ Consider the following sys
System I has larger bandwidth and faster speed of response than System II
System II has larger bandwidth and faster speed of response than System I
System I has larger bandwidth but System II has faster speed of response
System II has larger bandwidth but System I has faster speed of response

⇒ In 8085 microprocessor, an active low signal INTA is not needed from up service which of the following interrupt requ
TRAP
INTR
RST 7.5
RST 5.5

⇒ A cascade amplifier will have higher cut off frequency
equal to that of single stage amplifier
less than that of single stage amplifier
more than that of single stage amplifier
none of these

⇒

Match the following:

	List I (DOS commands)		List II (Meaning)
A.	ATTRIB	1.	Displays all directories and subdirectories
B.	SCAN DISK	2.	Moves files to another director
C.	MOVE	3.	Checks the status of disc
D.	TREE	4.	Hides a file

A-1, B-2, C-3, D-4
A-3, B-4, C-2, D-1
A-2, B-3, C-4, D-1
A-4, B-3, C-2, D-1

⇒ An ideal voltage amplifier should have
low input impedance and high output impedance
high input impedance and low output impedance
high input impedance and high output impedance
low input impedance and low output impedance

⇒ Inverters find applications in
HVDC transmission
UPS
variable speed ac drives
all of the above

⇒ Which of the following antennas is not wide band?
Marconi
Helical
Folded dipole
Discone