PHYSICS

1. If you double the frequency of a wave while keeping the speed constant, what happens to its wavelength?

ఒక తరంగం వేగం ఒకటే ఉండగా, frequency ని రెండింతలు పెంచితే, wavelength ఏమవుతుంది?

A) It doubles (రెండింతలు పెరుగుతుంది)

B) It halves (అరవుతుంది)

C) It stays the same (మారదు)

D) It becomes zero (సున్న అవుతుంది)

Correct Answer/సరైన సమాధానం:-

B) It halves (అరవుతుంది)

Explanation:-

Wave speed (v) = frequency (f) × wavelength (λ).

If speed is constant and frequency doubles, wavelength must decrease by half to maintain the equation.

తరంగ వేగం (v) = తరంగదైర్ఘ్యం (λ) × తరంగాల తీవ్రము (frequency, f)

వేగం స్థిరంగా ఉంటే, frequency రెండింతలు అయినప్పుడు, ఈ సమీకరణను సమతుల్యం చేయడానికి తరంగదైర్ఘ్యం అరవుతుంది.

2.Which of the following scientist was awarded the Nobel prize in physics for his discovery of the photoelectric effect?

A)Albert Einstein 

B) Niels Bohr

C)Marie Curie

D)Werner Heisenberg

Correct Answer:- A)Albert Einstein 

Explanation:- 

Albert Einstein was awarded the Nobel Prize

in Physics in 1921 for his discovery of the

photoelectric effect. While he is most famous

for his theory of relativity, his work on the

photoelectric effect, which demonstrated the

particle nature of light, was

groundbreaking in quantum mechanics

and led to a better understanding of light as

both a wave and a particle.

3.Why can't we hear sound in

space?

*Sound needs a medium like air, water, or solids to travel.

* Space is a vacuum, it has no air.

*Without a medium, sound waves cannot travel.

*That's why space is always silent.

4.