BITSAT (Birla Institute of Technology & Science Admission Test) Physics: Questions 141 - 145 of 382

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Question 141

Question

MCQ▾

Which of the following statement is not correct?

Choices

Choice (4)Response

a.

Infra-red rays are invisible but can cast shadows like visible light

b.

Infra-red photons have more energy than photons of visible light

c.

Photographic plates are sensitive to ultraviolet rays

d.

Photographic plates are sensitive to infra-red rays

Question 142

Question

MCQ▾

The work done in pulling up a block of wood weighing for a length of on a smooth plane inclined at an angle of with the horizontal is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 143

Question

MCQ▾

Two batteries of emf and having the internal resistance of and respectively are connected in circuit with a resistance of as shown in the figure. The current and potential difference between the points and are

Circuit Diagram with Two Resistors

Choices

Choice (4)Response

a.

b.

c.

d.

Question 144

Question

MCQ▾

Huygen՚s wave theory of light could not explain –

Choices

Choice (4)Response

a.

Diffraction

b.

Interference

c.

Photoelectric effect

d.

Polarization

Question 145

Vector Addition and Subtraction

Question

MCQ▾

Two vectors and are such that and If is the angle between positive direction of and then the correct statement is

Choices

Choice (4)Response

a.

b.

c.

d.

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