1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

For a series L-C-R circuit at resonance, which statement is not true?

A
Wattless current is zero.
B
Power factor is zero.
C
Peak energy stored by a capacitor = peak energy stored by an inductor.
D
Average power = apparent power.
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

Which of the following has/have zero average value in a plane electromagnetic wave?

A
Electric field
B
Magnetic field
C
Both (a) and (c)
D
Magnetic energy
3
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A convex lens is made of 3 layers of glass of 3 different materials as in the figure.

COMEDK 2020 Physics - Ray Optics Question 33 English

A point object is placed on its axis. The number of images of the object are

A
3
B
4
C
1
D
2
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A ray of light suffers minimum deviation in equilateral prism P. Additional prisms Q and R of identical shape and of same material as that of P are now combined as shown in figure. The ray will now suffer

COMEDK 2020 Physics - Ray Optics Question 32 English

A
greater deviation
B
no deviation
C
same deviation as before
D
total internal reflection
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