NEET Physics: Questions 2073 - 2076 of 2099

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Question number: 2073

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

Appeared in Year: 2016

MCQ▾

Question

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is –

Choices

Choice (4) Response
a.

12

b.

10

c.

8

d.

16

Question number: 2074

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Appeared in Year: 2016

MCQ▾

Question

The potential differences across the resistance, capacitance and inductance are 80V,40V and 100V respectively in an L-C-R circuit. The power factor of this circuit is –

Choices

Choice (4) Response
a.

0.8

b.

1.0

c.

0.4

d.

0.5

Question number: 2075

» Electromagnetic Induction & Alternating Currents » Quality Factor

Appeared in Year: 2016

MCQ▾

Question

Which of the following combination should be selected for better tuning of an L-C-R circuit used for communication?

Choices

Choice (4) Response
a.

R=25Ω,L=1.5H,C=45μF

b.

R=20Ω,L=1.5H,C=35μF

c.

R=25Ω,L=2.5H,C=45μF

d.

R=15Ω,L=3.5H,C=30μF

Question number: 2076

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

Appeared in Year: 2016

MCQ▾

Question

An electron is moving in a circular path under the influence of a transvers magnetic field of 3.57×102T. If the value of em is 1.76×1011Ckg , the frequency of revolution of the electron is:

Choices

Choice (4) Response
a.

1GHz

b.

62.8MHz

c.

100MHz

d.

6.82MHz

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