NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1061 - 1065 of 5119
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Question 1061
Question MCQ▾
Mirages are observed in deserts due to,
Choices
Choice (4) | Response | |
---|---|---|
a. | Total internal reflection of light | |
b. | Dispersion of light | |
c. | Double refraction of light | |
d. | Interference of light |
Question 1062
Question MCQ▾
Which of the following statements are true?
(1) Photographic plates are sensitive to ultraviolet rays.
(2) Photographic plates can be made sensitive to infrared rays.
(3) Infrared rays are emitted by hot objects.
(4) Infrared photon has more energy than the photon of visible light.
Select the correct answers and mark it according to the following codes:
Codes:
Choices
Choice (4) | Response | |
---|---|---|
a. | 1 and 3 are correct | |
b. | 2 and 4 are correct | |
c. | 1,2 and 3 are correct | |
d. | 1 and 2 are correct |
Question 1063
Question MCQ▾
In a series LCR circuit, resistance R = 10 Ω and the impedance Z = 20 Ω . The phase difference between the current and the voltage is,
Choices
Choice (4) | Response | |
---|---|---|
a. | 90° | |
b. | 45° | |
c. | 60° | |
d. | 30° |
Question 1064
Question MCQ▾
A lens is placed between a source of light and a wall. It forms images of area A1 and A2 on the wall for its two different positions. The area of the source of light is,
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 1065
Question MCQ▾
A 10 ohm resistance, 5 mH inductance coil and 10 µF capacitor are joined in series. When a suitable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is halved, the resonance frequency
Choices
Choice (4) | Response | |
---|---|---|
a. | is halved | |
b. | is quadrupled | |
c. | remains unchanged | |
d. | is doubled |