1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which of the following is not due to total internal reflection ?
A
Working of optical fibre
B
difference between apparent and real depth of a pond
C
Mirage on hot summer days
D
Brilliance of diamond
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens ?
A
Virtual, upright, height = 1 cm
B
Virtual, upright, height = 0.5 cm
C
Real, inverted, height = 4 cm
D
Real, inverted, height = 1 cm
3
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Photoelectric emission occurs only when the incident light has more than a certain minimum
A
power
B
wavelength
C
intensity
D
frequency
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be
A
1 : 4
B
1 : 2
C
1 : 1
D
1 : 5
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