Wavelength and Frequency is an important topic in the Physics section in VITEEE exam. Practising this topic will increase your score overall and make your conceptual grip on VITEEE exam stronger.
This article gives you a full set of VITEEE PYQs for Wavelength and Frequency with explanations for effective preparation. Practice of VITEEE Physics PYQs including Wavelength and Frequency questions regularly will improve accuracy, speed, and confidence in the VITEEE 2026 exam.
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VITEEE PYQs for Wavelength and Frequency with Solutions
1.
A Carnot engine takes \( 3 \times 10^6 \) cal of heat from a reservoir at \( 627^\circ C \), and gives it to a sink at \( 27^\circ C \). The work done by the engine is:- \( 4.2 \times 10^6 \) J
- \( 8.4 \times 10^6 \) J
- \( 16.8 \times 10^6 \) J
- \( 0 \)
2.
Following are expressions for four plane simple harmonic waves $$ y_1 = A \cos 2 \pi \left( n_1 t + \frac{x}{\lambda_1} \right), \quad y_2 = A \cos 2 \pi \left( n_1 t + \frac{x}{\lambda_1} + \pi \right), \quad y_3 = A \cos 2 \pi \left( n_2 t + \frac{x}{\lambda_2} \right), \quad y_4 = A \cos 2 \pi \left( n_2 t - \frac{x}{\lambda_2} \right) $$ The pairs of waves which will produce destructive interference and stationary waves respectively in a medium, are(iii), (iv), (i), (ii)
- (i), (iii), (ii), (iv)
- (i), (iv), (ii), (iii)
- (i), (ii), (iii), (iv)
3.
Which of the following statements is true?- The wavelength of light emitted by LED depends on the applied voltage across the LED.
- LED emits light when it is reverse biased
- The V-I characteristics of an LED is similar to that of a silicon p-n junction diode
- LED is made of a thin layer of lightly doped semiconductor material
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