NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1085 - 1089 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 1085

» Ray Optics » Power of a Lens

MCQ▾

Question

A convex lens when placed in the first position forms a real image of an object on a fixed screen. The distance between the object and the screen is 75 cm. On displacing the lens from first position by 25 cm to the second position again a real image is formed on the screen. Then the focal length of the lens is

Choices

Choice (4) Response

a.

16.7 cm

b.

25.0 cm

c.

33.3 cm

d.

50.3 cm

Question number: 1086

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

Question

A prism having an apex angle 4° and refraction index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray deviated after reflection from the mirror?

A prism and vertical plan mirror

A Prism and Vertical Plan Mirror

A prism having an apex angle 40 and refractive index 1.5 is located in front of a vertical plan mirror shown in figure.

Choices

Choice (4) Response

a.

176°

b.

c.

178°

d.

Question number: 1087

» Ray Optics » Mirror Formula

MCQ▾

Question

A short linear object of length b lies along the axis of a concave mirror of focal length f at a distance u from the pole of the mirror. Find the approximate size of the image.

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 1088

» Electromagnetic Induction & Alternating Currents » Resonance

MCQ▾

Question

The power factor of LCR circuit at resonance is

Choices

Choice (4) Response

a.

Zero

b.

1

c.

0.5

d.

0.707

Question number: 1089

» Electromagnetic Induction & Alternating Currents » Resonance

MCQ▾

Question

The phase difference between the current and voltage of LCR circuit in series combination at resonance is

Choices

Choice (4) Response

a.

b.

π

c.

d.

f Page
Sign In