Which indigenously developed technology was used in the AKASH-NG missile during its flight test in 2024?
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Correct answer: (B) Radio Frequency Seeker
RRB ALP · General Science
Physics: Light & Sound Previous Year Questions
16 Physics: Light & Sound (General Science) questions asked in RRB ALP previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 16 questions
- Official answer key
- Free
Other General Science topics
If an object is placed between the centre of curvature (C) and the focus (F) of a concave mirror, what type of image will be formed?
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Correct answer: (D) Enlarged, real, and inverted
The colour of scattered light depends on the size of the scattering particles. Very fine particles scatter mainly which colour of light?
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Correct answer: (A) Blue light
When an object is placed at infinity in front of a convex lens, the image formed is:
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Correct answer: (A) Real, inverted, and at the focus
If an object is placed between infinity and the pole (P) in front of a convex mirror, what type of image will be formed?
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Correct answer: (C) Virtual, erect, and diminished (smaller in size)
The ability of the eye lens to adjust its focal length to see objects clearly at different distances is called:
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Correct answer: (A) Power of accommodation
When a sound is produced, what travels through the medium?
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Correct answer: (D) The disturbance created by the sound source
Why is a colloid considered stable?
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Correct answer: (C) Its particles do not settle down when left undisturbed.
When white light passes through a prism, different colours of light bend through different angles. Which colour bends the least and which bends the most?
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Correct answer: (C) Red bends the least, violet bends the most
A concave mirror is used in torches and car headlights because it:
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Correct answer: (C) Can produce a parallel beam of light
Lenses in spectacles help correct vision defects due to:
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Correct answer: (D) Refraction of light through lenses
No matter where an object is placed in front of it, a concave lens always forms an image that is:
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Correct answer: (B) Virtual, erect, and diminished
The lifetime of certain species is given in the following table. Calculate the modal lifetime (rounded up to one decimal place) in days.
Lifetime 0-10 10-20 20-30 30-40 40-50 50-60 (days)
Frequency 10 35 52 61 38 29कुछ प्रजातियों का जीवनकाल निम्नांकित तालिका में दिया गया है। दिनों में बहुलकी जीवनकाल ( दशमलव के एक स्थान तक पूर्णांकित ) की गणना कीजिए।
जीवनकाल 0-10 10-20 20-30 30-40 40-50 50-60
( दिन )
बारंबारता 10 35 52 61 38 29
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Correct answer: (D) 32.832.8
A tuning fork is struck harder. Which of the following increases as a result?एक ट्यूनिंग फोर्क (tuning fork) को अधिक जोर से मारा जाता है। इसके परिणामस्वरूप निम्नलिखित में से क्या बढ़ता है ?
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Correct answer: (D) Amplitude only
If an object is moved from beyond the center of curvature towards the focus in front of a concave mirror, the image _______.
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Correct answer: (C) becomes larger and moves away from the mirror
During the propagation of sound in air, rarefaction is the region where:
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Correct answer: (B) density is minimum
How to use these RRB ALP General Science questions
Every question here was asked in a real RRB ALP paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB ALP papers as timed tests to check your speed under exam conditions.