BITSAT (Birla Institute of Technology & Science Admission Test) Physics: Questions 68 - 73 of 382

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Question 68

Question

MCQ▾

If a wire of resistance is covered with ice and a voltage of is applied across the wire then rate of melting of ice will be –

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question 69

Question

MCQ▾

electric heater operates on a line, then the rate at which it develops heat in watts will be –

Choices

Choice (4)Response

a.

670

b.

1310

c.

810

d.

1210

Question 70

Question

MCQ▾

A wave frequency is send along a string towards a fixed end. When this wave travels back, after reflection, a node is formed at a distance of from the fixed end of the string. The speeds of incident (and reflected) waves are –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 71

Question

MCQ▾

The earth revolves around the sun with an angular velocity in a circular orbit of radius . The force exerted by sun on earth in newton is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 72

Question

MCQ▾

Four capacitors each of are connected as shown in diagram the voltmeter reads The charge on each plate of capacitor will be –

A Circuit Diagram of Four Capacitors

Choices

Choice (4)Response

a.

b.

c.

d.

Question 73

Question

MCQ▾

Two identical batteries, each of emf and internal resistance by passing a current through it. The maximum power that can be developed across using these batteries is –

A Circuit Diagram Three Resistors and Two Batteries

Choices

Choice (4)Response

a.

b.

c.

d.

Developed by: