What should be increased to increase the angular magnification of a simple microscope?
Anonymous Quiz
25%
The power of the lens
47%
The focal length of the lens
19%
Lens Aperture
9%
Object Size
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Which of the following phenomenon is used in optical fibre?
Anonymous Quiz
24%
Refraction
23%
Diffraction
17%
Scattering
36%
Total Internal Reflection
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Which of the following statements is true for total internal reflection?
Anonymous Quiz
36%
Light travels from rarer medium to denser medium
47%
Light travels from denser medium to rarer medium
11%
Light travels in water only
7%
Light travels in the air only
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Hey students quiz will be here soon, Where are you??
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A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then what is its focal length?
Anonymous Quiz
24%
Focal Length will become zero
37%
Focal Length will become infinite
27%
Focal length will reduce, but not become zero
13%
Remains unchanged
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For a telescope, the larger the diameter of the objective lens
Anonymous Quiz
24%
Greater the resolving power
53%
Greater the magnifying power
16%
Smaller the resolving power
7%
Smaller the magnifying power
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What is the phase difference between electric and magnetic fields in an electromagnetic wave?
Anonymous Quiz
19%
0
25%
ฯ
48%
ฯ/2
7%
ฯ/4
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Which of the following waves have a maximum frequency?
Anonymous Quiz
23%
infrared waves
42%
gamma rays
16%
microwaves
18%
radio waves
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NCERT WALLAH via @QuizBot
๐ฒ Quiz 'mcq'
electromagnetic induction
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electromagnetic induction
๐ 5 questions ยท โฑ 45 sec
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According to Maxwellโs Hypothesis, a changing electric field gives rise to?
Anonymous Quiz
39%
Induced EMF
24%
Electric Field
31%
Magnetic Field
6%
Magnetic Dipole
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Which of the following proves that electromagnetic waves are transverse?
Anonymous Quiz
21%
Reflection
31%
Diffraction
28%
Interference
20%
Polarisation
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Which of the following is used to investigate the structure of solids?
Anonymous Quiz
20%
Gamma Rays
24%
Infrared Rays
40%
X-Rays
17%
Cosmic Rays
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Which of the following radiations are used to treat muscle ache?
Anonymous Quiz
16%
Microwaves
30%
Infrared Rays
27%
Ultraviolet Rays
27%
X-Rays
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