HARD
JEE Main
IMPORTANT
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Will the diffraction effects from a slit be more clearly visible or less clearly visible if the slit-width is increased?

Important Questions on Light Waves

EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 4
If we put a cardboard (say 20 cm×20 cm ) between a light source and our eyes, we cannot see the light. But, when we put the same cardboard between a sound source and our ear, we hear the sound almost clearly. Explain.
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 5
TV signals broadcasted by Delhi studio cannot be directly received at Patna which is about 1000 km away. But, the same signal goes some 36000 km away to a satellite, gets reflected and is then received at Patna. Explain.
HARD
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 6
Can we perform Young's double slit experiment with sound waves? To get a reasonable fringe pattern, what should be the order of separation between the slits? How can the bright fringes and the dark fringes be detected in this case?
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 7
Is it necessary to have two waves of equal intensity to study interference pattern? Will there be an effect on clarity if the waves have unequal intensity?
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 8
Can we conclude from the interference phenomenon whether light is a transverse wave or a longitudinal wave?
EASY
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 9
Why do we not have interference when two candles are placed close to each other and the intensity is seen at a distant screen? What happens if the candles are replaced by laser sources?
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 10
If the separation between the slits, in a Young's double slit experiment, is increased, what happens to the fringe-width? If the separation is increased too much, will the fringe pattern remain detectable?
MEDIUM
JEE Main
IMPORTANT
CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 17 - Light Waves>QUESTIONS FOR SHORT ANSWER>Q 11
Suppose white light falls on a double slit, but one slit is covered by a violet filter (allowing λ=400 nm). Describe the nature of the fringe pattern observed.